Have you ever watched them clean a room? It's like watching a robot go through the motions, no consideration for exceptions. It brings to mind the post about the guy that left his glasses behind on the bed and when he returned to get them they were in the bed after being made. The saddest part is he had checked out and they didn't change the sheets!

It may be the thermostat is being reset as a result of a motion sensor determining the room is empty and turns off/resets the ac unit. Some of the European properties require a room key to activate lights & ac (good reason to ask for a second key).