Glass box bathrooms are common in lower end Chinese hotels. So they don’t really have a door, and you are separated from the rest of the room by a glass pane. Weird, but not the worst I’ve experienced. The worst is when the shower straddles the squat toilet.

I really prefer bathrooms with a separate door for the separate toilet from the rest of it. And the shower has to be a walk in, but bathtubs are really only common in North America outside of higher end resorts that have both a separate walk in shower and a bathtub.