The most bizarre thing we have come across was in a room in Prague. The bathroom had opaque glass but I discovered, when my OH got up in the middle of the night, that when you turned the light on, the walls suddenly became transparent!!! I ended up going to the bathroom in the pitch dark. Lucky I remembered the positions of the bidet and the toilet!
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Another trend is for everything to be remote controlled. We had an absolutely beautiful apartment in Gran Canaria but the windows, the security blinds, the lights, the air con, the sound system and tv all could only be controlled by remotes. But the room didn't have a guide as to which each remote was . The first evening, before going to bed, I had opened and closed shutters(not a quiet procedure), opened and closed various windows and put the tv on and off, before just deciding to go to sleep with the main light on!!
Perhaps its an age thing and young ones love glass walled bathrooms and of course they understand technology.