We had a fantastic stay in Madrid, and the location of the apartment is perfect. Close to everything that matters for a family of 5 with strong cultural interests. Naturally one should not go to bed to early, as street noises and the Flamengo dancing in the restaurant 2 level lower are felt through the building. But with so much activity around and so many great restaurants why should you?
We did not meet with the host, so cannot comment, however the doorlady was very friendly and with some French and lot's of arm movements, we could communicate. We also asked questions next door at the receptionist of the trendy ME-hotel.
We would recommend it to our friends.