Excellent location, central. Walking distance to the palace of Madrid, shops, restaurants, bars. My sister and I were able to drop our bags off early (13:00) and check in later at 15:00. The convenience of it was definitely worth it. There is NO WiFi so be aware of that. Maria also offered a lot of suggestions before arriving in Madrid. We didn’t get to meet her but were greeted by Gustavo who was very kind. My only complaint would be about the apartment not being clean by the time my sister and I checked in. That was a bit inconvenient since my sister wanted to change but the bathroom was still being cleaned.
If you’re a light sleeper you will need ear plugs (which I use regularly). The street can get noisy as night and the light from the street comes directly in. I could overlook all that for the location.