Is it possible to install a camera in the hotel?

There must be a camera in the corridor of a regular hotel, but it is hard to say about the room or bathroom.

But it is impossible to install most rooms and sanitary sheets unless it is possible to install them in informal hotels.

So I suspect that there is a camera after I check in, so I can take a closer look. If you really want to install such a camera, you won't install a big camera outside.

It must be the kind with a pinhole camera. At this time, it is necessary to carefully check the places with holes or gaps in the room, windows, and places where pinhole cameras may be hidden.