The apartment is not well represented by the photos. It's pretty dark, the furniture doesn't make a whole lot of sense. The ceiling hangs pretty low. There is a noisy fridge next to the bed.
The bathroom is rather old and probably needs to be renovated. Apparently, some other owners in the same multi-story building recognized that as well and during our stay almost a constant disturbance by construction noises in the same house were clearly audible.
The bed and especially the pillows were quiet comfortable and if it wasn't for the loud noises we were sleeping well.
The location is amazing with a walking distance to most of the city center.
There were no bags of tea, coffee, water or similar present when we entered. IMO a pretty simple but great service to ease the arrival.
I assume there are better places to stay in Madrid for the price but it wouldn't be the worst idea to stay here if there are no better alternatives.