This 4th floor apartment is perfectly located. Walk 20 meters to Calle Gran Vie, 600 meters to the Royal Palace and take the train 4 stops from Plaza Espanol to get to the Zoo. The apartment is very nice with two good rooms with double bed with double quilt and room with single bed. There is everything you need and Fernando is very helpful.
Some nights we were bothered by techno music from the disco on the ground floor. So earplugs can be a good idea :-)