I am a hotel housekeeper. Large chain. All our cups are dishwashed and if we run out of clean ones we leave the room without cups and tell afternoon staff to put them in after the dishwasher has finished. None of us would ever rinse and reuse.
Personally I don’t think guests need to strip the bed
Don’t leave wet towels on the bed though
No used condoms on the floor
No used sanitary pads on the floor
Please bag up shitty nappies
I’d prefer it if you tried to wash away any beard/leg/pube trimmings as they are a bastard to clean off when they’ve dried on
A dozen half empty cans of Stella are annoying to deal with
Ditto cold cups of coffee
Try not to spray fizzy drinks all over the walls
Try to piss in the toilet rather than in the general vicinity
Don't shit in the bath
If you’re sick on the carpet please don’t leave without letting us know
Bins bagged up is a nice touch but again it’s not necessary
All of the above are extremely common occurrences and you can’t tell which guests will behave in that way by looking at them - class is absolutely no indicator.