This is my second stay at this time - this time as a solo traveller looking for a cheap but modern, lively hotel near the center of Madrid.
It didn't disappoint - rooms were clean, arty, quiet, and with good amenities. The beds are very comfortable and the bathrooms functional. Lighting in the entire hotel (incl rooms) is interesting / funky.
Breakfast at the hotel was delicious (see pic) with tons of food and good coffee machines. The breakfast room looks over a square near Chueca. I didn't go to the roof deck this trip but the pool / rooftop bar was a highlight from my last trip.
I gave this stay 5 stars mainly for the location, cleanliness and value. For the price I paid, I really think this (and other Room Mate hotels such as the Laura) are hard to beat for staying in Madrid close to the nightlife. Service was friendly and useful too. Definitely give this hotel a try.