We stayed here one night on a quick visit to Madrid from Barcelona. The location is great, very close to the metro stop and an easy ride from the train station.
Check in was easy and the host was very helpful. He told us some good places to eat and gave us some tips about what to do and where to go.
There is a new little pub that opened up downstairs. We had drinks there and watched a soccer match.
The space is on the top (fourth floor). Note that there is no elevator and the stairway is narrow compared to US standards. That bother us as we traveled very light.
The beds are in the loft area and are basically futons on the floor. They were comfortable enough. The bed in one loft is under a slanted ceiling so you kind of have to crawl into the bed. It's under a skylight which was kind of cool to have the moonlight come in.
We didn't use the showers or kitchen, as we just did a quick overnight, but they appeared clean and new. The kitchen was well appointed w a microwave, cooktop and stove. All utensils too.
The street was quiet and our sleep was not interrupted except by the trash truck in the morning.
Definitely would stay here again if we come back.