Location is good, close to subway supermarkets, bars, etc.
The only downside is the outside noise that despite closing all doors, it is still noticeable: if you have trouble sleeping with noise this might be an issue - but after an all day walking around the city we were super tired and this didn't bother us in the end. The bed was comfortable and provided a good night of sleep. All in all, it is a good place for a short trip in Madrid.