This is a fantastic stay that I cannot recommend enough. Alfonso is a fantastic host - caring and attentive. He even managed to get us tickets to a Real game! Always fast to respond and willing to help! Furthermore, the apartment is fantastic. Opera is central, only a few minutes away by walking from Sol and Callao, but still calm and cozy during the day. It's also close to Casa Del Campo if you want to get away from the city for a while. The studio is cozy and looks just like on the photos. It's much lighter than most other apartments as it is exterior with a view over the rooftops and the opera. Recommended for the solo female traveller, I always felt safe walking home late at night.