If you are concerned about cameras in Airbnbs, consider picking up a camera detector off Amazon for ~$30. They are basically a ring of super bright LEDs with a colored lens in the middle you put up to your eye and scan around the room. The light reflects off the curved glass of the lens and the filter helps you see it. The less effective but impromptu version of this is just holding a super bright flashlight between…
So if you really want to hide a pinhole camera. Meow... https://www.aliexpress.com/i/32731641924.html Looks like an arms race easy to win.
https://en.m.wikipedia.org/wiki/Nonlinear_junction_detector
Expensive, but surely there's someone providing such a service nearby?