I was in Madrid for only three days, but this place really made me feel at home.
Arnaldo was super nice and a really quick replier.
Just as it said on the description the room was really close to the metro and just outside the house there were a bunch of shops where you could get necessities if needed.
The instructions to retrieve and give back the keys of the room were simple and accurate.
100% would recommend to stay here if you need a cozy place to stay in.