@Emiel1 It's always such a bonus when guests take it upon themselves to "fix" whatever they've damaged, isn't it? Like scrubbing their dog's poop stain off the antique carpet with bleach.
I had a housesitter from hell once who emailed me a list of 20 things she wanted to "improve" around my place, the day after I left for Canada.
I emailed her back to keep the house clean, feed the dog, and refrain from changing anything at my house- everything was set up the way it was for a good reason, and that I had engaged her as a housesitter, not a lifestyle coach or handyman.