Alfonso's apartment was modern and very clean with great attention to design and detail. The bed was particularly comfortable and the room was amazingly dark with the blinds down, we slept in every morning :)
The neighbors had a lot of visitors coming and going which you can hear in the lounge but with the bedroom door shut it was not a problem. The area is perfectly safe and only a minute walk to the metro. Some really nice bars and cafes within a 5 minute walk.
Alfonso was very helpful and kind, letting us check out a few hours later so we didn't have to carry our heavy bags while waiting to catch our plane. Would recommend Alfonso's apartment, excellent location and very well priced.