I've never seen any comments on this site about problems with peoples cars no matter where they parked it. These hotels do not want your car broken into any more than you do. There is nothing to stop someone from driving onto the airport lot and breaking into cars then paying and leaving the lot. If someone wants to break into your car bad enough they will no matter where you park it.
I hope the lot guys tried to cover it up. They are usually REALLY nice.
and arrived to find a dead battery. Hotel security helped them out quickly with a boost and got them on their way home.