There's a hotel in Edinburgh with boutique pretensions I stayed in that had smoked glass (only) around the toilet. That was a pretty annoying arrangement for me and my wife. Luckily they had regular loos in reception.
wow, it is actually the one me and my SO stayed at! specifically this[0] kind of room. when reading your description i immediately thought about this one. we did have a gentleman's agreement, "can you please put on your noise cancelling headphones and don't look back, i gotta..."
only stayed there for one or two nights, it says a lot when a campervan gives more comfort than a hotel room :)