 The room was claustrophobic I travel a lot but I haven t slept in such a small you can not call it a room shoe box under the earth before When I booked I had no idea that it will be under the earth To open the window was possible but you had a dirty wall in front of your face and no normal air circulation Only the air from the air con If you need a submarine experience without fresh air stuck in a shoebox I can recommend the single rooms at ground flour 
No Positive