The toilet in the apartment did not flush properly. When I informed the host, she said the prior guest had mentioned it to her. She said she would try to call the plumber the next day. She did not bother to ask about the severity of the problem and whether the problem required immediate attention. I wound up having to unscrew the top so that I could manually have the tank fill. Upon checking out, I explained what I had done, and the host expressed surprise and said she would call the plumber that day, indicating that she never even viewed the problem as that serious.
Furthermore there is scaffolding right outside the windows. In the morning, workers are coming right by so there is a noise and a lack of privacy if keep the shades are up. Certainly no view like the one shown in the pictures of the listing.
And finally although it was the end of summer it was very hot in Madrid. The unit advertises air conditioning but the host said it was not working due to the construction outside.
While all of these problems may be rectified at a future date, during my stay they spoiled what would have been a good apartment in a great location.