Unfortunately all your options require custom work: It looks like you need an 18" corner cabinet. You will have to modify the last wall cabinet on the left. As I am eyeballing it, you should be able to cut the last cabinet in the middle and then shorten the left section to fit the space of the wall next to the door trim. It's an option that makes the area looks symmetric. Or you can install shelves over the sink. I would not recommend it because it will take the looks away. And the last option will be to remove the last cabinet, shorten it so it fits over the sink and install a single cabinet where the double one was. This will leave a triangle space behind the corner where the two cabinets will meet. You can block the space under it. Hope this helps!

Dimensions are not legible in the plan. Whatever we could make out that is not matching the ones you have mentioned above. Please recheck if the below matches with the floor plan that you shared. Bathroom 1 (brown tiles) - 7.9 ft x 4.1 ft Bathroom 2 - 7.4 ft x 4.1 ft Bathroom 3 (blue tiles) - 7.3 ft x 4.1 ft

that's right. a column like this is not a handicap at all. it's not too deep, so it does not take up much space. As kalatmak space has suggested, one of its uses would be to place a cove light. you can also extend a shallow shelf of the same depth above the bed to place tiny led lights below it and light up the wall behind. then you can also do a false wall extension behind to place the bed against it and create a little niche above the bed head. you could paint that niche in a different colour

We are planning to have a solid surface shower put in one of our bathrooms. When I say solid surface, I am talking about a brand similar to Corian. The solid surface fabricator takes care of the solid surface drain pan fabrication, solid surface shower walls fabrication, and their installation. The solid surface fabricator does not take care of the substrate. That is to be done by others. What is typically being used as a substrate behind a solid surface shower? And what is the proper finishing method of that substrate? The manufacturer recommends moisture resistant plywood, moisture resistant drywall, or cement backer board. No real details are provided on how the substrate is to be finished. Looking at some of the forums, I have seen the following methods: (1) Green board (2) Green board with a waterproof membrane applied at the corners (3) Cement backer board (4) Cement backer board with waterproof membrane applied all around (5) Doesn’t really matter as the solid surface shower is your waterproof membrane Wondering if anyone here has any insight as to the best method to complete the solid surface substrate walls? Thanks!