I really enjoyed my stay at this place. It seems to be freshly renovated (Jan. 2022) and it’s still ongoing. Everything was very clean. There was even a coffee machine in the room and water was free at the entrance.
It is well located in Central-Madrid (Metrostation Sol). Therefore, you can reach all major tourist attractions/sightseeing spots by foot.
Just notice if you are a light-sleeper, you should definitely bring earplugs since the walls are very thin.
Can definitely recommend this place!