I loved Cesar's apartment -- it's in a modern (i.e., everything works!), clean and quiet building, it has elevators (great for my 2 heavy suitcases!), even had a front desk person during the day. Inside the apartment, the living room is light and airy and the bedroom was well protected from street noises inherent in the city center. The apartment comes with dimple keys that actually work, which is a huge relief after staying in other places where the lock of the door to the building has gone awry and it takes some significant work trying to enter the building. Perhaps I've had once too many thrilling nights, coming home late at night and struggling at the door, having a mini-heart-attack. No such problem at Cesar's place! The location is perfect, very centrally located, convenient but just a few steps away from the busiest streets. The apartment was clean and well equipped, and the bed was comfortable (so much so I overslept the morning after arrival!). Cesar kindly gave me recommendations on where to eat and what to see around/outside Madrid, and it was also good to know he lives in the same building just in case I needed anything. I would definitely stay at his apartment again! Thank you Cesar!