We loved our stay. Beds are very comfortable, and it is easy to climb to bed above.
As has been said, the space is small, with few storage spaces. It was not really a problem for us, because we are 2. But for 4 persons, for several days, i think it's not good.
Otherwise, it's perfect !
Clean, not noisy (quiet, except noise streets the Saturday night), extra towels, fridge, Bluetooth speaker, kind staff, many subway stations, restaurants...
I recommend.