I have been in many airbnbs and have never had any complaints but this I just cannot recommend. After having lived in Madrid for quite sometime I also know what other offers are out there and this is just not up to standard. The host was accomodating and these are just mere facts and observations. Let me start by saying: the apartment is inside on the bottom floor of a noisy, unmaintained hallway of a building with the small barred window going into a hallway where there were continuous fighting sounds from other floors, smells and no way to aerate the place, or have any light from outside. Furthermore, the central setting makes it impossible to sleep as the light from the hallway reflects right into the apartment and you hear every little noise of neighbours coming and going. When we arrived one could not say that the apartment had been cleaned, black hair everywhere (I do not have black hair), dust, and I don't even want to know what else. I proceeded to mop the floor before I could set a foot in. The bathroom had a clogged sink, while the towels that were offered were still wet and placed on the bed (hello mold!).
Due to a high fever I was forced to stay one night (sleepless due to the constant light, noise and water running) but placed a complaint the following day.
Lastly, watch out for the steep staircase! (Photo attached)