A friend and I had a great time staying in Sergio's apartment! It's in a great location, right on a lively plaza with shops, restaurants, and a big grocery store. 10 minute walk to Puerta del Sol and the Prado. The rooms were super big, kitchen and bathroom included. Only drawback was that it was pretty hot in the apartment at night (make use of that bedroom fan!!). Sergio was super helpful and sweet, would definitely recommend his place!