So they’re not just hidden better? Does make sense.

Well, I can use the world‘s best safety deposit box without being on CCTV while I pass secrets in and out of it, right? Just not for free.

Bummer, this sounds like it is about to turn into a Monero ad (“let us pay privately”)

Probably not even hidden because rich people are also catching a lot of legal winds, in which case the hotel has no choice but to provide the material. Better not to have it in the first place. You don't want your hotel cams listed as evidence in a 500M$ divorce case I guess.

Also are hidden cameras even legal? I know here in EU they aren't.

In hotels of all tax brackets, you usually get a room key.

And the salient difference is that CCTV is simply defense-in-depth, not a primary means for authentication.