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The Mansion on the Sea - Southernmost House in the USA

3.0 star property
Adults-only beach hotel with outdoor pool

Choose dates to view prices

Photo gallery for The Mansion on the Sea - Southernmost House in the USA

Terrace/patio
Front of property – evening/night
Property amenity
Premium bedding, pillow-top beds, individually furnished
Exterior

Reviews

9.4 out of 10
Exceptional

Popular amenities

  • Room service
  • Bar
  • Housekeeping
The current price is HK$2,164
HK$2,673 total
includes taxes & fees
20 Apr - 21 Apr

Room options

Available filters for rooms
Showing 18 of 18 rooms

View all photos for Mansion Room #204 - Courtyard View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Mansion Room #204 - Courtyard View - Adults Only

Highlights

Balcony
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #107 - Ocean View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Mansion Room #107 - Ocean View - Adults Only

Highlights

Balcony or patio
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
  • Ocean view
  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #203 - Courtyard View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Mansion Room #203 - Courtyard View - Adults Only

Highlights

Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
Private bathroom
  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #101 -Ocean Front - Adults Only

Premium bedding, pillow-top beds, individually furnished

Bungalow #101 -Ocean Front - Adults Only

Highlights

Separate sitting area
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
  • Ocean view
  • 500 sq ft
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed OR 1 King Bed

View all photos for Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

Premium bedding, pillow-top beds, individually furnished

Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

Highlights

Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
Private bathroom
  • Partial ocean view
  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #201 - Ocean View with private balcony - Adults Only

Premium bedding, pillow-top beds, individually furnished

Mansion Room #201 - Ocean View with private balcony - Adults Only

Highlights

Balcony
Separate sitting area
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
  • Ocean view
  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #202 - Ocean View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Mansion Room #202 - Ocean View - Adults Only

Highlights

Balcony
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
  • Ocean view
  • 300 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

Highlights

Separate sitting area
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
  • Ocean view
  • 300 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

Premium bedding, pillow-top beds, individually furnished

Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

Highlights

Separate dining area
Separate sitting area
Individually furnished
Air conditioning
Kitchen
Dishwasher
HDTV
Premium bedding
  • Partial ocean view
  • 700 sq ft
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed

View all photos for Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

Premium bedding, pillow-top beds, individually furnished

Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

Highlights

Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
Private bathroom
  • Partial ocean view
  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #102 - Pool View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Bungalow #102 - Pool View - Adults Only

Highlights

Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
Private bathroom
  • 400 sq ft
  • Sleeps 4
  • 1 Queen Bed and 1 Double Sofa Bed

View all photos for Cottage #104 - Ocean View w/Direct Pool Access - Adults only

Premium bedding, pillow-top beds, individually furnished

Cottage #104 - Ocean View w/Direct Pool Access - Adults only

Highlights

Separate sitting area
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
  • 300 sq ft
  • Sleeps 4
  • 1 King Bed and 1 Double Sofa Bed

View all photos for Mansion Room #303 - Courtyard View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Mansion Room #303 - Courtyard View - Adults Only

Highlights

Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
Private bathroom
  • City view
  • 500 sq ft
  • Sleeps 4
  • 2 Queen Beds

View all photos for Lopez House #109 - Courtyard View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Lopez House #109 - Courtyard View - Adults Only

Highlights

Balcony or patio
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
  • 500 sq ft
  • Sleeps 2
  • 1 Queen Bed

View all photos for Lopez House #205 - Partial Ocean View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Lopez House #205 - Partial Ocean View - Adults Only

Highlights

Balcony
Separate sitting area
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
  • Ocean view
  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #206 - Partial Ocean View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Lopez House #206 - Partial Ocean View - Adults Only

Highlights

Balcony
Separate sitting area
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
  • Ocean view
  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #207 - Courtyard View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Lopez House #207 - Courtyard View - Adults Only

Highlights

Balcony
Separate sitting area
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
  • 500 sq ft
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #103 - Pool View - Adults Only

Premium bedding, pillow-top beds, individually furnished

Bungalow #103 - Pool View - Adults Only

Highlights

Separate sitting area
Individually furnished
Air conditioning
HDTV
Premium bedding
Pillow-top bed
Hairdryer
Designer toiletries
  • 300 sq ft
  • Sleeps 2
  • 1 Queen Bed
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About the area

Map
1400 Duval Street, Key West, FL, 33040

What's nearby

  • Southernmost Point - 1 min walk - 0.2 km
  • Duval Street - 1 min walk - 0.2 km
  • South Beach - 2 min walk - 0.2 km
  • Ernest Hemingway Home and Museum - 9 min walk - 0.8 km
  • Mallory Square - 4 min drive - 2.0 km

Getting around

  • Key West, FL (EYW-Key West Intl.) - 9 min drive

Restaurants

  • ‪Old Town Tavern Key West - ‬9 min walk
  • ‪Southernmost Beach Café - ‬1 min walk
  • ‪Southernmost Point Bar In the USA - ‬5 min walk
  • ‪Rum Bar at the Speakeasy Inn - ‬5 min walk
  • ‪Banana Cafe - ‬4 min walk

About this property

The Mansion on the Sea - Southernmost House in the USA

Hotel near Southernmost Point
Located close to Key West Butterfly and Nature Conservatory and South Beach, The Mansion on the Sea - Southernmost House in the USA provides free continental breakfast, a poolside bar and a terrace. The on-site restaurant, Seaside Cafe at Mansion, offers lunch, dinner and ocean views. In addition to shopping on-site and a garden, guests can connect to in-room WiFi, with a speed of 100+ Mbps (good for 1–2 people or up to 6 devices).
Other perks at this hotel include:
  • An outdoor pool with sunloungers and pool umbrellas
  • Self-parking (surcharge), free newspapers and wedding services
  • Luggage storage, a gift shop and tour/ticket information
  • Coffee/tea in reception, a front desk safe and a porter/bellboy
  • Guest reviews say great things the helpful staff, first-rate property condition and location
Room features
All rooms are individually furnished, and offer comforts such as premium bedding and air conditioning, in addition to thoughtful touches such as free newspapers and WiFi.
Extra amenities include:
  • Designer toiletries, showers and hairdryers
  • 42-inch HDTVs with streaming services and premium channels
  • Coffee/tea makers and daily housekeeping

Languages

English, French, Russian, Spanish

Similar properties

3 outdoor pools, pool umbrellas, pool loungers

Southernmost Beach Resort and Guesthouses

  • Pool
  • Spa
  • Free WiFi
  • Restaurant
8.6 out of 10, Excellent, 2,404 reviews
The price is HK$2,232
HK$3,035 total
includes taxes & fees
13 May - 14 May
Southernmost Beach Resort and Guesthouses

Property amenities

Internet

  • Available in all rooms: WiFi
  • In-room WiFi speed: 100+ Mbps (good for 1–2 people or up to 6 devices)

Parking and transport

  • Parking on site (USD 20 per night)

Food and drink

  • Free continental breakfast available daily 8 AM to 10 AM
  • A bar/lounge
  • A poolside bar
  • A restaurant
  • Coffee and tea in common areas
  • Snack bar/deli

Restaurants on site

  • Seaside Cafe at Mansion

Things to do

  • Outdoor pool
  • Shopping
  • TV in common areas

Conveniences

  • Free newspapers in lobby
  • Gift shop/newsstand
  • Limited-hour front desk
  • Luggage storage
  • Safe at front desk

Guest services

  • Concierge services
  • Housekeeping (daily)
  • Multilingual staff
  • Porter/bellhop
  • Tour and ticket assistance
  • Wedding services

Outdoors

  • Beach loungers
  • Garden
  • On the waterfront
  • Outdoor furniture
  • Picnic area
  • Pool loungers
  • Pool umbrellas
  • Terrace

Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • Upper floors accessible by stairs only
  • Well-lit path to entrance

Room amenities

Bedroom

  • Pillowtop mattress
  • Premium bedding

Bathroom

  • Designer toiletries
  • Hair dryer
  • Shower
  • Towels provided

Entertainment

  • 42-inch flat-screen TV with premium cable channels
  • Streaming services

Food and drink

  • Coffee/tea maker
  • Room service

More

  • Air conditioning
  • Free daily newspapers
  • Individual furnishings
  • Iron/ironing board
LIST_ALT

Policies

Check-in

Check-in start time: 4 PM; check-in end time: 10 PM
Early check-in subject to availability
Contactless check-in and check-out are available
Late check-in subject to availability
Minimum check-in age - 18

Check-out

Check-out before 11 AM
Contactless check-out

Special check-in instructions

The front desk is open daily from 8:00 AM - 10 PM
Front desk staffed during limited hours
If you are planning to arrive after 8:00 PM please contact the property in advance using the information on the booking confirmation

Access methods

Front desk (limited hours)

Pets

Pets not allowed

Children and extra beds

Children younger than 18 are not allowed at this adults-only property; all guests 18 and older are welcome
Cots (infant beds) are not available

Payment types at the property

MONETIZATION_ON

Important information

Fees

You'll be asked to pay the following charges at the property. Fees may include applicable taxes:

  • Spring Break deposit: USD 250 per stay for guests aged under 21 years old staying between 1 March and 31 March
  • Resort fee: USD 30.78 per accommodation, per night
The resort fee includes:
  • Beach loungers
  • Beach towels
  • Concierge service
  • Housekeeping
  • In-room bottled water
  • In-room coffee
  • In-room safe
  • Internet access
  • Lending library access
  • Pool access

We have included all charges provided to us by the property.

Optional extras

  • Self-parking fee: USD 20 per night

The above list may not be comprehensive. Fees and deposits may not include tax and are subject to change.

You need to know

Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
Minimum Spring Break check-in age is 24 years old.
This property accepts credit cards; cash is not accepted
Noise-free guestrooms cannot be guaranteed
Safety features at this property include a carbon monoxide detector, a fire extinguisher and a smoke detector

We should mention

This property does not have any lifts
Children 18 years old and younger are not permitted at this adults-only property
Only registered guests are allowed in the guestrooms

Property is also known as

Southernmost House Hotel Key West
Southernmost House Hotel
Southernmost House Key West
Southernmost House
Southernmost House
The Southernmost House Hotel
The Southernmost House Hotel Adults Only
The Mansion on the Sea Southernmost House in the USA
The Mansion on the Sea - Southernmost House in the USA Hotel
The Mansion on the Sea - Southernmost House in the USA Key West

Frequently asked questions

Does The Mansion on the Sea - Southernmost House in the USA have a pool?

Yes, this property has an outdoor pool.

How much does it cost to stay at The Mansion on the Sea - Southernmost House in the USA?

As of 14 Apr 2025, prices found for a 1-night stay for 2 adults at The Mansion on the Sea - Southernmost House in the USA on 20 Apr 2025 start from HK$2,163.53, excluding taxes and fees. This price is based on the lowest nightly price found in the last 24 hours for stays in the next 30 days. Prices are subject to change. Choose your dates for more accurate prices.

Is The Mansion on the Sea - Southernmost House in the USA pet-friendly?

No, pets are not allowed at this property.

How much is parking at The Mansion on the Sea - Southernmost House in the USA?

Self-parking is available for USD 20 per night.

What time is check-in at The Mansion on the Sea - Southernmost House in the USA?

Check-in start time: 4 PM; check-in end time: 10 PM. Late check-in is available during limited hours.

What time is check-out at The Mansion on the Sea - Southernmost House in the USA?

Checkout is at 11 AM.

Where is The Mansion on the Sea - Southernmost House in the USA located?

Located in Old Town Key West, this beach hotel is steps away from Southernmost Point, Duval Street and South Beach. Key West Butterfly and Nature Conservatory and Ernest Hemingway Home and Museum are also within 10 minutes.

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The Mansion on the Sea - Southernmost House in the USA Reviews

Reviews

9.4

Exceptional

Rating 10 - Excellent. 742 out of 1004 reviews
Rating 8 - Good. 169 out of 1004 reviews
Rating 6 - Okay. 62 out of 1004 reviews
Rating 4 - Poor. 19 out of 1004 reviews
Rating 2 - Terrible. 12 out of 1004 reviews

9.4/10

Cleanliness

9.4/10

Staff & service

9.2/10

Amenities

9.0/10

Property conditions & facilities

9.2/10

Eco-friendliness

Reviews

10/10 Excellent

Larry

Best place to stay on Key West.
Stayed 3 nights in Mar 2025

10/10 Excellent

Julia

Great trip!
Stayed 4 nights in Apr 2025

8/10 Good

Ernest

Convenient to downtown
Stayed 1 night in Mar 2025

10/10 Excellent

Bonnie

The breakfast was wonderful and the desk staff were extremely helpful.
Stayed 2 nights in Feb 2025

10/10 Excellent

Susan L

we loved mansion on the sea ! will definitely be back ps and the breakfast was outstanding!
Stayed 2 nights in Mar 2025

6/10 Okay

joseph

Closeness to dining and entertainment and The sea.
Stayed 3 nights in Mar 2025

10/10 Excellent

Edward

Staff and location could not have been nicer.
Stayed 4 nights in Jan 2025

10/10 Excellent

Lisa

Everything was fantastic!!! What a treat!
Stayed 2 nights in Dec 2024

10/10 Excellent

gary

Its great
Stayed 3 nights in Apr 2025

10/10 Excellent

robert

Very enjoyable
Stayed 1 night in Apr 2025

10/10 Excellent

Andrew

Perfect get away
Stayed 1 night in Feb 2025

10/10 Excellent

Umesh

great place to stay. walking distance to most things in the town.
Stayed 3 nights in Nov 2024

10/10 Excellent

Richard

Excellent place, friendly people
Stayed 3 nights in Dec 2024

10/10 Excellent

Shawn

Loved this place! After a day of terrible travel delays the gentleman that checked us in made us smile. He was super friendly and so helpful. The room we had was beautiful and the view was amazing. The food at the restaurant was delicious. Even on Duvall St it was quiet other than the chickens.
Stayed 5 nights in Mar 2025

10/10 Excellent

Jim

Great pool. Ocean views.
Stayed 4 nights in Feb 2025

10/10 Excellent

Ami

The staff was very friendly and helpful. The room was delightful and very clean. Breakfast was very good. We loved spending time on the balcony and at the heated pool. We loved having the resort feel with no crowd.
Stayed 5 nights in Feb 2025

10/10 Excellent

William

Wonderful house with lots of cool history.
Stayed 6 nights in Jan 2025

10/10 Excellent

Matthew

Great
Stayed 1 night in Mar 2025

10/10 Excellent

Melanie

Great place. Like you step back in time. Pool is awesome. Old but that’s part of the charm.
Stayed 3 nights in Mar 2025

10/10 Excellent

David

The view is beautiful, gorgeous sunsets, the service is really friendly, clean rooms, and a great pool.
Stayed 5 nights in Dec 2024

10/10 Excellent

Jamie

Amazing and kind staff. Lovely stay.
Stayed 2 nights in Oct 2024

10/10 Excellent

Kathleen

I could walk out to pool and get a chair at the pool, always available.
Stayed 4 nights in Feb 2025

8/10 Good

Ronald

The property was wonderful. My only issue was we stayed in room 106 which was right next ro their common bathroom which had a lot of traffic and noise.
Stayed 5 nights in Jan 2025

10/10 Excellent

Katherine

Staff were excellent! Room was clean!! Didn’t like the 3rd floor walk up!!
Stayed 3 nights in Feb 2025

10/10 Excellent

Elisa

Staff is fantastic, breakfast is delicious, location cannot be beat!!! The cottages have a gorgeous view of the ocean and the sunrise! Will definitely recommend and stay here again!
Stayed 1 night in Oct 2024