The room itself was clean, well equipped, with good WIFI and totally in line with the ad and our expectation. Check in and communication with the host was easy and flawless.
The location is right in the center of Madrid, in one of the busiest neighbourhood of the city. While this is really great during the day where you have many shops, cafés, restaurants etc just a few steps away, this can turn into HELL at night because of the noise that people do on the street and that will get into the room even through the double glazing windows. We couldn't hardly get any on our last night (a saturday) because of people shouting, chanting, dancing and playing music until 7:00 in the morning in the little square at the bottom of the building.
Bottom line, the set up of the rooms is really great, but avoid it in the summer if you like a reasonably quiet environment.