I've had various experiences, of late all good, our holiday lets, two in Wales and one in South Hams Devon have been very satisfactory. On entering the properties all have been immaculate, basics such as tea, coffee and milk provided plus some goodies such as home baked scones, Welsh cakes etc. No complaints. On our exit we were asked to strip beds, dump towels in shower and make sure any used crockery, cutlery etc were put through the dishwasher, which we did, it didn't take us very long to do those things. I would add that I wouldn't dream of moving fixtures such as pictures around.
When we were a young family we did some holiday rentals, here in the UK, France, Italy and America with mixed results. Somewhere, I can't remember where now, wanted a full clean, which we didn't really do, as far as I'm concerned this is a business and as such factored into the price should be the cost of cleaners coming into turn the place around before the next people arrive, and that means a heavy duty clean throughout, it's no good asking exiting guests to do that, happy to strip beds. The holiday rental that annoyed me the most back then was one in Devon that hadn't been cleaned particularly well, the owners had left all their food in cupboards as if they'd cleared off for the week, had the cheek to ask us not to touch it. I complained to the letting company, that if this is how they presented their let, they should be charging "mates rates" rather than the commercial fee that applied, I was also really annoyed with the holiday company for being so lackadaisical as to what they expected from their client owners. Never used them again!
Generally the holiday lets we had in the US were of a high standard and were often in a condominium, wooded estates with use of communal pool. The gites we rented in France were a bit more basic, one down in St Jean de Luz was quite damp which didn't do one of my asthmatic children any good at all. So yes some varied experiences back then.