As I understand, housekeeping is instructed to look around the room to see if a bunch of guns are lying around. This is a result of the incident that happened there in 2017, where there were two dozen guns in a hotel room, unnoticed, because housekeeping respected the do not disturb sign indefinitely.
Housekeeping is neither trained nor spending time to performing a deep search of anyone’s room. But they do know what a pile of guns look like, and they’re instructed to escalate the situation to their superiors if they discover it.
And yet, housekeeping is directed to look for soldering irons and USB sticks, among other things. God forbid some maniac brings a loaded thumb drive into the premises - some of those high-capacity rounds can hold 1TB or more!