@C'est moi. Re hotels, what the eye doesn't see, the heart doesn't etc. Best not to think about it. Saw luminol tests on coverlets once & it put me right off.
The cleaning may not always be that deep however. A few years ago on a cycling holiday in Charente I left a pair of shoes under the bed & a fortnight later, happened to be passing again, & popped in not expecting much, but...there they were still under the bed in July, at the height of the tourist season.
Off track, Pineau de Charente was an unusual drink but unfortunately not available anywhere else, wonder why.