Small, but very clean and cute! It is an interior so there is no natural sunlight, but the location is perfect...right across the street from Atocha! Super clean and comfortable! Would definitely stay here again. Only thing is when I checked in, the building door wouldn’t open so I just called the hostel and they opened it for me. (this apartment is not part of the hostel whatsoever, just the same building entrance) I had a great stay here!