I recently stayed at the new Sonder Sofia, which had no reviews yet, but I trusted the brand and was not disappointed. Despite minor growing pains typical of a new location, my experience was fantastic. The hotel is in a prime location, with metro and bus access nearby and a supermarket in the same building, though I preferred Mercadona up the street. My studio was well-equipped, including a full kitchenette, washer-dryer combo, and Smart TV, making it feel like a home away from home. It was also incredibly quiet despite its central location, and the code-access system was convenient. Minor cons included self serve baggage storage is still being set up and limited to 10am-4pm for the time being, and occasionally inconsistent hot water. Overall, I highly recommend Sonder Sofia and look forward to staying there again.