fantastic location with extremely friendly and supportive staff. common areas still need to be finished, but this does not really affect the enjoyment of the specific room. I had an issue with the bed side power, which was very promptly checked and as they couldn't do anything, an apology note and a small gift left.
lots of thoughtful small touches, which make it feel a lot more than a serviced apartment, while getting the fast support of a serviced apartment.
I would very much visit again for a friendly, functional base in Madrid. I wouldn't bring my girlfriend for a romantic weekend here though - for me it isn't that vibe.