Five stars because Aleksandre has been completely honest on his description of the room, and for the great location. To add a few good points, the common spaces are cozy and friendly, and the room has some additional private space where to put jacket, shoes, bag. The room is windowless but there is a good flow of air. The bathroom is cleaned very well by the cleaner, good luck sharing it with random people (but you know that). Bed was comfortable, slept very well, just long enough for my height (164cm).
I booked the room for two days due to an emergency, I wouldn't stay much longer than a few days personally, but I would stay again.
Only negative point, doors and keys are noisy, if you sleep like a brick you should be fine, though you won't hear any other noise at all (traffic, people, elevator etc.) which is good.