I really liked the apartment! It is in an old elegant building on the 3rd floor. You enter through a back door. The door of the flat can only be locked with a key not by just pulling it in the frame.
I stayed there for about 2,5 weeks and everything worked fine. The kitchen seemed well equipped although I only used the fridge and once the oven. The airconditioning works perfectly, cools down the apartment in a short time so that I could turn it off again. The bed was comfy. In madrid they collect the garbage at night, so you hear the noise from the street, I got used to it quickly but if you have a light sleep you should bring ear plugs. I liked the little balcony and spent a few evenings there with my laptop or having a beer.
I also used the washing maschine which worked fine. However there was no hanging rag or I did not see it. There was an iron as well but no ironing board, but I managed anyways.
Shower was fine for me as well, I never ran out of warm water, but I was there by myself.
Sofa is very big, WiFi works fine, there is also a tv that I did not use though.
Beautiful wooden floor and incredibly high ceilings, a very pretty apartment to sum it up! I did not miss anything.
I would stay there again :)