Although the apartment was very clean and comfortable, the location is the best feature. In a big city like Madrid it's really nice to stay so close to all the main attractions. We were minutes-walk from most of the parks, plazas, and market places. We never really had to rely on taking taxis or public transportation. Our host Ana let us check in a couple hours early as well which was much appreciated as it prevented us from having to lug our bags around the city for a couple hours! The place is pretty cozy, which was perfect for my wife and I, but i could see it being a challenge to have any more than 2 guests at a time.