The apartment is in a great location very close to a lot of main attractions and has everything you need for a stay in Madrid. Aside from being a bit dark, the flat is very comfy and nicely furnished.
It could do with a few more mirrors in the bedrooms and there is only one air conditioner for the whole flat in the kitchen /living room. We visited in mid June when the temperature was around 40 degrees and when we asked if there was a possibility of having fans in the bedroom, we were told it wasn’t necessary. The air con made the kitchen and living room cold but the bedrooms were very warm for sleeping.