We had a wonderful time staying in this apartment during our visit to Madrid! As other reviews has said, it truly does seem bigger in person than the pictures show. The location is easy to get to from the Puerto de Atocha train station (which connects easily to the airport through Metro and Cercanias commuter trains), and it is also easy to walk to most of the attractions: Royal Palace, Prado, Reina Sophia etc. Madrid also has a wonderful metro system which can get you anywhere else in the city as well and there is a stop just a few minutes walk from the apartment.
Ana's Airbnb was fully stocked with anything we might have needed during our stay, from extra blankets to tea and coffee, and I would say that it met if not exceeded the quality of some of the Airbnb Pluses we have stayed at. We will certainly stay here again if we ever travel back to Madrid!