Booked a private room for two people, and considering the place’s very central location, it was a great deal.
Just know that it is a very no-frills place. The rooms look like they have been converted from office spaces, as they still have office-style fluorescent lights overheard, desks, and cabinets. The decor and paint choice are also a little odd, literally everything is either painted pitch black and/or rust-colored to hide dirt and to appear clean. One thing to note also is that there are only 2 bathrooms (only one-at-a-time inside) for the 20+ people that are staying on the floor, so best to wake up early.
Other than that, it was all run very efficiently, like a factory. Probably the easiest check-in and check-out experience I have ever had, as well as huge private rooms. They also have great amenities like a water fountain and coffee for guests, which is very nice.
Would definitely stay again if it was for a quick one-nighter in Madrid, but would not stay again if it was for a longer trip.