We've staying in a lot of cottages with varying rules. Some ask to strip the beds and others don't. To be honest, I don't mind stripping the bed. It doesn't take long.
With the dishwasher I always run in the night before then wash up breakfast stuff by hand the next morning anyway.
I like to leave a place as I've found it in terms of tidiness and things put away in the kitchen, meaning the only thing the cleaners need to focus on is actually cleaning and making the beds.
The biggest difference, however, is that we don't have children, so clearing up after a couple with one bed is a much different exercise than 3 or 4 beds when you're trying to be out by 10.
My biggest bugbear, however, is when the owner doesn't leave clear enough instructions about recycling. In OP's post she mentions no glass. Where my parents live they can't recycle glass in their domestic recycling. They have to save it all up and go to the bottle bank still.
Which is fine, if that's the case at a holiday cottage but a) let us know; and b) tell us where the nearest bottle bank is!
We had one cottage that said all recycling had to go in the "big green bag" outside the door. Never did find a big green bag. There was a bin though, which we used, but we never did figure out whether it was correct or not.
We have previously googled local councils to see what the recycling rules actually are where we're staying.
I wish we were consistent across the country!