I've rented a lot if self-catering homes in my time in many countries and not once have I ever expected soap, toilet rolls, bin liners, detergent, etc., to be provided for me. Going to the shop is first priority after checking in, or I pack what I need in the car before leaving home. I'd expect it in a hotel, yes, but self-catering means do it yourself. Be autonomous. There's no staff.
I'm really surprised at how many people expect a hotel-style service in self-catering rentals.
In saying that, I'm so fed up with those types of holidays after many, many years I'm seriously considering trying out an all-inclusive next year! No washing up, no food shopping, no cooking. Bog roll provided 😉
If the food turns out rubbish, I'll be back to self-catering... *sigh*