Some hotel rooms have thermostats that offer only a limited amount of control to the guests. For example, the temperature might be limited to the range of 71 to 84 degrees F.
This Your Mileage May Vary post has links to YouTube videos that show how to hack these thermostats so they will go beyond the normal limits. That is useful if you sleep best at, say, 65 degrees.
The site contains a warning that some of these hacks might damage the thermostat, but I deem that highly unlikely if you are just pushing the buttons.
I always carry an un-inflated mylar balloon and string, which can be used to fool occupancy sensors by “blowing in the wind.”
Enjoy the tips, and stay comfortable on your upcoming hotel stays.