The 'foyer' is what the builder/renovator has called the entrance from the bedroom to the bathroom and closet. I think we have flexibility, the wall flanking the bathroom and closet could possibly be moved. The entrance from the bedroom might be harder to move. I am trying to not take any more space from the closet which can be partially seen on the top of the plan. I have attached a link to an image of the plan from photobucket. I don't know how to make the plan more readable. Here is a link that might be useful:

I'm late to this thread, but I'm so glad you're going with restoration. The tile and fixtures are fantastic. A restored-height ceiling, better light fixtures, paint, shower door and a no-frill window covering (simple roman shade? )will go a long way towards making it a sharp, current-looking retro bathroom. I've been staring at the photos trying to decide what wall color would look good. We recently redid the bathroom in our 1912 (or so) bungalow and painted it a matte black, albeit with a white shower, floor and board and batten wainscot paneling. I was worried that black would be very dark and confining, but it isn't at all. I don't know if it would work with the pink tile, but it might look cool. Is the floor tile pattern off just inside the door?

The 5 foot turning radius is only important for public access. If a person needs a wheelchair, it is always possible for the person to get a zero turning radius wheelchair, so only a 32" turning radius is needed. More important is a roll-in threshold for the shower, adequate access for the toilet area, and either a door that opens outward or a sliding door for the toilet compartment. Also allow for a roll-up sink. When I remodeled my bathroom, I added a sink to the toilet compartment that could easily be replaced with a roll-up sink should the need arise. Another thing to consider is to allow for things like soap and shampoo and other shower toiletries to be accessible to someone in a seated position.

I put in a curbless wheel chair accessible shower in my only fill bathroom. I had my builder add a floor drain to the room to act as backup in case the shower ever floods. THAT is what you should do if you want a curbless shower in a rental. BTW, I recently did overflow my shower for the first time. My brand new thick cotton mat was between the shower and the floor drain. It was so heavy with water that I could just barely lift it onto the grab bar in the shower to let it drip dry. Two days later, I had to hang it outside in the sun to get it dry. What did I do to flood outside of the shower? I am not sure! I suppose I could have let the hand sprayer turn toward the curtain. Or maybe the big wad of hair that I had peeled off my fingers that had crossed between the shower floor and the room floor had made a bridge for the water to follow. I have been shedding a lot of hair lately and it has gotten quite long during the stay-at-home time. Whichever it was, I have not had so much water leave the shower before. My trench drain is in the front of the shower, between the shower floor and the room floor. But it would not take long for a clogged wall-side trench drain to let water leave the shower, either. A trench drain is no different than a single middle drain, it just has a long, skinny collection trench on top of the drain hole. I would not put one in a rental unit. Another way to have an even more foolproof shower is to get a solid surface (like Corian) shower pan. Since they can be installed in a day, the money you spend on a higher price material can be offset by lower installation cost. Corian walls are also foolproof. The cleaning people can’t hurt it. Any scratches that happen (though it is not easy to scratch) can be buffed out in place. No grout lines. No mold or mildew. Waterproof and it does not fail. See if you can see a Corian or Swanstone shower in a local showroom. Swanstone has some nice patterns now, too. You can get a white-on-white granite look, white with colored specks, or a white and gray swirl. Here is a link https://swanstone.com/en/collections-and-finishes/collections/swanstone to their site. People with Swanstone and Corian showers say that they look the same as the day they were installed twenty years later. Be aware that Swanstone Veritek is not the same as their solid surface Swanstone product. It is fiberglass, I think. At least consider a true solid surface shower.