@Jennifer3225
Jennifer, I think I am probably the hosting trendsetter in controlling guests use of a hosts energy.
A/.......My listing airconditioning is set to operate across a 4c temperature bandwidth only! If a guest wants to be any warmer than 24c (75f) in the winter time or, cooler than 20c (68f) in the summer time.....they won't do it at my expense!
I have my cottage airconditioning operating through one of these controllers......

It can be set to only operate within a set temperature band and is available via this link.....
https://www.airconoff.com.au/Aircon-Off-Smart-Remote-PRO
Okay, that controls what guests will do with my air conditioning while they are on the property.
But as hosts know, guests will be environmental vandals where power consumption is concerned, they will go out all day and leave windows open, air conditioning running. Their reason (apart from being just plain thoughtless) is....."I am paying for it, I will do what I like with it"!
You can't educate these people they don't care, energy consumption is not their problem.....it's yours, the hosts!
Leaving notes, telling them what you want them to do just antagonizes them and is likely to get you a less than stellar review......it's counter-productive!
Well, I have got that one beaten as well. We live in a marvelous age, and this is a gem!!
https://www.jaycar.com.au/240v-wireless-controller-switch-to-suit-home-automotion/p/LA5575
The guest cottage key is equipped with a remote sender, it's in that yellow pouch.......

and when the guest walks out through the front gate it automatically triggers a receiver which actives the Jaycar wireless controller and, after a 5 minute time-out period, deactivates the power supply to the a/c.

As soon as the guest walks back in through the gate the a/c is automatically re-energised and springs back into action.
The guest might think it's a pretty inefficient heating/cooling system when they enter but within 5 minutes it's up to speed and they forget all about it!
All my lighting is sensor touch lighting, the shower screen is automated up/down and I try to make the whole place as user friendly as possible.......it all works seamlessly and it keeps me free from large power bills! With my solar rooftop generation this is where I currently stand with my supplier.....I am $170 in credit.....

That will change now that winter is coming around and that credit will soon be eaten up but I have previously established through my metering that 70% of this property's power consumption was by guests, but by putting in smart control measures I have been able to take that guest consumption down to 35%.....and not one guest has complained that they didn't feel comfortable.
Cheers..........Rob
@Felicity11 @Delphine348