I know I read somewhere that they now have a new way and only maintenance can do that - especially with the sensors, that has to be turned off or at night it gets hot again... it was in a trip report...
but in the "Old days" this is the info I have saved:
On the
thermostat, push the power button and the down arrow (button that adjusts the temp) at the exact same time.
If you do this correctly, you will see the letters "bp" where the temp normally shows. You are now bypassing the
sensors in the room. You can then set the temp to whatever you want and it keeps the room that cold whether
you are in it or not. You might have to do this once a day as the thermostat tends to go back to sensor mode
after 24 hours.