This apartment is great for a family of four. We were a couple and two little kids, who shared a bed. There is a separate bedroom with a queen bed, and the Ikea couch in the living area converts into a queen bed as well. The main area is a kitchen (fully equipped with quality dishes, cooking and cutting equipment, fridge, and a laundry machine), that is connected to a small dining area (a table for four), a television and the couch and coffee table, as well as a comfortable non-dining table chair, so there's plenty of seating for the number of guests who could stay there. The bathroom is roomy. All the space is efficient, comfortable, clean, and quite stylish. The building is secure, and is located on a small pedestrian street that does not get a lot of noisy foot traffic at night (kind of rare for Madrid). The neighborhood felt entirely safe, and is within about a 15 minute walk to either the Parque de Buen Retiro, the Prado Museum, or the Reina Sofía Museum. The Plaza Central is an easy walk from the building. Antonio's colleague Natalia gave us a thorough explanation of the space and the area. She is very helpful, and speaks English very well (although we spoke in Spanish with her). My family and I will be sure check this apartment's availably on our next chance to return to Madrid.