This has become somehow trendy in certain types of hotels catering mostly for couples. I've seen it (traveling solo, so no worries there) even more "open" arrangements, such as a shower that is a plastic-and-glass cylinder in the middle of the room - look at the Fletcher Hotel Amsterdam - https://www.fletcherhotelamsterdam.nl/en/photos-videos
What is odd is to also have the toilet in the open-plan. Usually, such trendy hotels slip the toilet from the shower and keep just the shower in place.
The trend of using a not-fully-opaque glass door that doesn't lock between bathroom and the rest of the room is more widespread these days. But usually doors are opaque enough to give privacy for the one using the bathroom, provided the other person doesn't open the door.
Although TripAdvisor has been going down for several reasons, something they are still very good at is to have pictures taken by guests. Booking also has more and more of such pics. If a hotel has an unusual bathroom layout, there will be pics there.
Besides architectural trends, there is another reason for that: using plenty of glass, but not exaclty mirrors, greatly improves the perception of space in otherwise small rooms.