I awoke this morning still not having thought of how to deal with the foyer wall challenge. In the spirit of avoidance, I switched gears a little bit and worked on the reception desk. Alois says he doesn't need much space. He can keep his guest log under the desk and doesn't need to be there except when he's handing out keys or collecting the rent. The desk is made of matboard and is freestanding. After this photo was taken, I added a panel detail like the one under the stairsto the front and added a half-door to close in the reception area. (Door details haven't yet been painted on.) I painted it and again put on 3 or 4 coats of satin finish polycrylic. It matches the stairway. They almost look as if they are part of a single unit.
Yes ... glue the wood onto it. The acrylic will form the core of the wall with the wainscoting, door frame, door, window framing, etc., prestained and glued onto it. That will be so much easier than building a wall with a door and a couple of windows in it with fiddly little bits of wood and then fitting the "glass" in the openings. There may be some accents of colored glass; I don't want to block so much of the view that the foyer can't be seen. All this is detail yet to be worked out. My muse is threatening to take a long holiday if I don't provide her with some sustenance and a short nap after our mornings' workout!
The plan is for the wall to be freestanding, so it can be removed for access to the foyer.