It depends on whether doors are shut, and if the room AC is on to dehumidify the air. Lots of
DVC villas also have exterior hallways and plenty of decks and balconies, and it's been my experience that hotel guests aren't always too concerned when it's not their electric bill. Plus, many hotels have their housekeeping staff turn t-stats down in unoccupied rooms, particularly in slow periods. I know I've entered more than a few hotel rooms in Texas, Louisiana, and Florida and been hit with a sauna blast.
We actually had to stop our employees from bringing small fridges into their offices because they would freeze over every now and then. Not often, but often enough to cause some decent flooring damage, and that's inside airconditioned offices.
But yes, a fridge inside conditioned space should be both more efficient, and less likely to freeze up, but they still do.