Do normal people when they go away looking for dust behind the radiator or on the light fittings. Then look down the plughole in the shower. Even shelves too big or wardrobes too small. Then mark people down because certain items were not on the menu.
Just for a laugh and emulating Four In A Bed, I ran my hand over the top of a hotel wardrobe and about a year's worth of dust fell on my head.
"THAT'LL LEARN ME"!!!!!
I've only ever complained once at an hotel it was really grubby ,the carpets looked like they had never seen a vacuum and don't get me started on the bed cover stains ugh! the mattress looked prewar lol ,they did sort it all out .if that had been on four in a bed the people would have a field day and instead of paying anything would have wanted paying for staying there .