I used to room with a guy on business trips that would have to open and inspect every drawer, door, curtain, anything that moved in a hotel, then look under the beds to make sure that
1) Nobody was hiding and going to jump out and get us?
2) Nothing was left behind, he freaked out one time over a wrapper and demanded we move rooms because it was not properly cleaned... The wrapper was under the wall ac unit so it was just shoved under there at some point.
It wouldn't have been a huge deal if he did this only once when we got to the room, but every time we left or came back he did this, also put up the do not disturb sign every time we left, so he knew no one would be in the room.
Made me change roomies, I like having the bed made for me...