We had a great stay and really enjoyed our time in Madrid! Xuan is nice and helpful, the communication was always good. The apartment is beautiful and you have everything you need. The only thing that is missing in the description is, that the bedrooms and the bathroom have no doors.
I don't think it's a problem in general but the guest should be aware of it before they book it. Two couples would maybe prefer more privacy and have the possibility to close a door for sleeping and taking a shower. But everything else was perfect and we had a great stay!