That was the worst experience at a hotel. At the middle of the night out room was designated to another person, so somebody just entered the room while we were sleeping. If that was not enough, and although we have complained several tunes to make sure it was not going to repeat, during the day (while we were at the city) they checked in yet another person at the room; as we had left our stuff there, the hotel just threw it all away! Unbelievable. At the end, we lost one day of the trip to Paris trying to recovery our things - what was not possible, we just lost everything. The manager promised us to debit back in my account the payment for the room, to compensate everything, but until now not even that happened.
Definitely the worst Ibis hotel I ever stayed, will make me think a lot before booking another time a room at the Ibis branch.