Hi,
We stayed for 2 months in the apartment. The apartment itself is pretty nice, full of light, huge windows from the floor to the ceiling, and a nice terrace. The flat is very quite, no noise from outside, something that is hard to find in the city center, and valuable for home office and sleeping. Coach and pillows have good quality. For long stays is great, with all the amenities you can need, and for short stays and tourism the location is fabolous, 2 min to Latina metro station and walking distance to all major sightseens of Madrid. The owners help with all the thinkgs you need.
To improve, sometimes there was a bad odour in the bathroom and in the terrace, and regarding the cleaning we were expecting something more.