My housemate liked the heating on high. I liked being able to see my breath. We’d secretly adjust it at night. At one point I put a cardboard box over the thermostat. She cut a tiny door in it. I glued the door shut. This continued until the landlord fitted a locked cover that neither of us could open, raised the rent for “improvements”, and we spent the whole winter cold, together, paying more.
In every war, the landlord wins. He wasn't even in the building.