This is a very central -yet quiet- location, perfect if you want to explore Madrid, enjoy the night life and get some sleep, too! 2 mins walk from Chueca metro station, but you can also walk to Alonso Martínez in 10 mins (or less). Lots of cool places are walking distance (Malasaña area, etc).
The flat is lovely and clean. The room is very small, but you can use the lounge and kitchen (both very spacious) to work/eat/etc.
Javier is an excellent host: friendly, very polite and extremely helpful.
There is another room in the flat, but I didn’t meet any of the other guests during my short stay.
Excellent value for money.