Search "How to find a camera in your airbnb" on DDG and you'll find pages of tips on how to methodically search a space for hidden devices.For me there's an easy way to avoid that:
Rent a room in a hotel. You get a few advantages in the process:
You don't really have to search for cameras in your room (and to the whataboutists that cram out some old story about the dodgy motel keeper who had cameras installed in guest rooms: How often did that happen compared to the shit that hosts pull off in Airbnb appartments?)
You don't have to tiptoe around other residents who understandibly hate your guts, because they don't appreciate an illegal hotel in their place of residence and all the shit that comes with it
Chances that you get ripped off by some less than honest host, or a whole ring of hosts working in concert, are much, much smaller
You don't get sudden cancelations on short notice
In better hotels you have a front desk, housekeeping and maintenance staff on call if things do go wrong
You're not breaking the law
You have, at least with larger chains, customer representatives, who actually deal with justified complaints and won't run into a "Eat shit, that's our final decision and we won't correspond with you about this issue anymore and if you insist we'll ban you from the platform" response (except when your issue blows up on social media and you get the usual pr lies from Airbnb and their ilk)
Oh, and prices for - if you're lucky - generically and cheaply decorated cookie cutter appartments managed by some faceless management company are really not that much cheaper, if at all, than the one for comparable hotel rooms. Espically in desirable locations.
Airbnb may have made sense in 2013. Nowadays I can just shake my head.