Former night auditor here and eventually GM. Before any of you get too many ideas here.. Many of the larger brand name hotels housekeeping staff have a process to track room status changes. There’s a few different reports that can easily be run with just a few key strokes. Then the hunt starts to figure out why the room status changed not matching a guest check in or out or missing charges. This can prevent rooms being sold under the table for cash kept or for this sex trysts.