Agree that if they charged you EUR 370 (instead of EUR 220) for the ORIGINAL room that is a problem - unless there were stipulations about the number of people allowed in room and stated charges for additional people. The second room, well, probably you are SOL since it sounds like you were violating hotel policy and they sold you a second room at prevailing rates. Were you trying to put 6 people in a 2 person occupancy room?