The apartment is very nice, big enough for a couple. The bathroom and the whole space were clean, the fridge was working, as well as the hot water. It's pretty central and in one of the most famous neighborhoods of Madrid, everything is walking distance (8 mins from Reina Sofia museum). I think the best thing was the self check-in/check-out, because we arrived at 5pm; the instructions provided by Maribel are very clear and easy to understand. We saw her every morning and she is super nice and always available to give you some tips. We really enjoyed our stay and we highly recommend it!