We had a very nice stay at Ricardo's place. It is a clean and quiet space. The apartment is on the roof of another home, so be aware you do have to walk up some narrow spiral stairs to access it (fine for us, but something others should note). Ricardo met us in person to deliver the key and help us access the parking area behind a locked gate, which was really helpful and convenient. The apartment is walkable to all the best parts of Coyoacán, which we loved!