I really wanted to give this place a 5 rating but I cannot rate this more than a 3 star review. The location and the unit itself are great, but the experience I had was terrible. I am posting my experience because I wish I had known beforehand so hopefully this helps. First, I arrived at the agreed check-in time of 3pm and my room wasn't ready. I asked why and she said they were still cleaning and to go walk around for another 25 minutes. Not acceptable when 3pm is already late enough. It was frustrating, but in the big scheme of things not a huge deal. Second, as most people said on their reviews, the Wifi was spotty at best. Third, I got zero sleep - ZERO. After a long morning and afternoon of touring I tried to nap, but the walls and floors are so thin I heard every conversation and it sounded like the people above the unit walking around were literally stomping. Then in the evening, it got worse... 1, 2, 3, 4 in the morning it was so loud I heard everything. Could hear people using the toilets, having sex, walking up and down the stairs - it was absolutely ridiculous. I told the host before writing this review to let them know this could be an issue for future guests, but the response was basically a shrug of the shoulders. I am not upset, I am simply writing this review because I wish I had known before booking this place. If you are going to Madrid to party, then don't let this deter you.