Amazing location - walking distance to everything, and if you don't want to walk, metro and bus stops are super close. Also very close to the Atocha train station for day trips. Lots of great restaurants and bars nearby. Apartment is very clean and the kitchen has everything you need. Wifi worked without issue. Washer with dryer function was a plus. Great for a couple, and if you have more than two I suppose it could work for a shorter stay. The bedroom is quiet and isolated from outside noise, but you will hear the normal sounds of community life and people using the stairs. The exterior window in the living area is north-facing, although you will get some indirect light from it and the interior windows in the bedroom. The one issue we had during our stay is that there was a strange odor that came and went in the bedroom, possibly sewer/gas related. Other than that, we had a nice time in the apartment while we explored Madrid.