The flat was quiet, clean, comfortable and well equipped. We felt really at home which was mainly due to the really friendly and attentive hosts.
The location of the apartment is good, you can walk in 20-30 minutes to most of the sightseeing spots in the city and the lovely district Malasaña is also not far away.
All in all we were more than happy to stay with them and would make the same decision again:)