@Elle50
it is always better to avoid than to fix. Print a picture from the user manual to show how to change the water temperature by pressing this button (with an arrow pointing at it). Draw a picture or just write a sign "Keep the windows closed all the time" and tape it on each window.
I know it is not very decorative but unfortunatelly it is necessary for STR. It is like hosting 10 y. old kids.
We bought and installed the simplest appliances, locks, roller blinds... and were surprised how many guests don't know how to use it. Even if all you need is common sense. Soon enough we have a house manual and a lot of labels and notes all over the place and it helps.
A few very important things we tell and repeat a few times during check-in. For example " Always close the front door" .
Of course, nothing is full proof ;(