The best part of the apartment is it’s location. Centrally located. The Royal Palace is just 10 mins walk. It has a great 24/7 super market at a stone throw distance. We had a great time staying at Sergio’s apartment and it was exactly as it was in the picture. Very clean and tidy and sergio made the check in super easy. Natalia who helped us check in also was of great help as she guided us to the nearby restaurants and supermarkets. I would definitely recommend Sergio’s apartment for 2/3 people travelling to madrid