How high is the knee wall? You're going to have a window in that knee wall? Dormer or low-set? What is the ceiling height over there? Would a skylight work instead? Why do you prefer not to have the window over sink or shower? I think all of your sketches tend to chop up your space. To have to pass the shower walls on your way to the sink or toilet is rather confining. Usually it's better not to put plumbing in an exterior wall, and it's nearly always cheaper to keep it one wall. My instinct would be to put the sink on the left wall opposite the door, as it the pleasantest part of a bathroom to see when you walk in or the door is left open. Then the toilet next to it. A sink should have 30 inches of wall space and a toilet 32 inches - but I am not sure if that space can overlap in the unoccupied part of the wall - I think it can. And then you are left with the space next to the exterior wall. You could have a big shower the whole width of that wall and a window set high in that wall (or a skylight). Or a smaller shower with the window next to it and shelves or vanity table or chair under the window. You can have frameless glass doors which will keep the visual space open, or even a partial partition and doorless shower - you put the showerhead in the partial partition aimed away from the shower opening. Or you could have a tub with a hand held shower. What you do with that exterior wall depends a lot on your climate, and how high that knee wall is.

Thanks to everyone for their concern. They are measuring today. Plumber thought it would be okay but he hadn't actually measured. I'll feel more secure when they have actual numbers. Luckily the toilet and tub are on site so they can measure. I remember from our previous remodel being worried about the inspectors catching that the toilet was too close to the tub, but no one seems to think it's a problem here (inspectors have been in and out twice and never mentioned it, so I think it must be different here). Anne, thanks! I love how it's coming along. How long did it take you to do that pattern? I love it and have easy access to dal tile, but I'm worried about committing the time to doing the design myself. I'm already doing the builtins and a bunch of other small projects. Lundy, I took a look and there are a couple of possibilities there - don't love them as much the swirly one, but definitely doable. There is so much beautiful tile on your site.. If I had more time, I'm sure I would eventually find something in the imperfects that would work.

#1 is eye catching & #2 is more subtle. It’s all a matter of personal choice; you are the one seeing & cleaning it everyday. Recently had tub removed & shower installed in narrow bathroom. Daltile floor and MSI porcelain wall tiles. Lower wall tiles used 1’x2’ rectangular and upper tile above accent border used 18 inch squares turned diagonally. Used Lacitate grout, it comes with sealer already mixed into the dry grout. A little more expensive but mold & mildew proof translates to less scrubbing. We have better things to do! Sorry about pics couldn’t delete or correct. Top one gives a fuller view but is lighter in real time.

If you have an architect, why aren't they doing their job? You don't have an architect "draw up" what you tell them to. They come up with suitable, hopefully creative, ideas that suit you and the space. What you have doesn't look like something an architect would come up with, and if they did you need to find a new one.