Planning main bathroom with pre-wall installation

Dear forum members,

unfortunately, our architect failed at a very unfortunate spot in the house, in the main bathroom on the upper floor, where in my opinion symmetry and harmony are especially important.
The exhaust duct of the gas condensing boiler runs directly up the gable wall in the middle of the room from the HAR below. This results in a protrusion in the middle of the wall in the room. The general contractor's idea is simply to build a partition wall up to the eaves side. This creates a "half" wall.
I have been racking my brain for a while about how to best "conceal" this spot.
On the adjacent eaves wall, the toilet and bathtub are to be placed (as well as a radiator).

I have simulated various options in 3D.
Basic idea:
The partition wall should have a purpose or a nice appearance and not look like a closed "half" wall.
I would prefer to make a shelf behind the bathtub. The partition wall next to the toilet could be used to install a flush-mounted module. Furthermore, I would like to pick up the height of the shelf and create a shelf in the partition wall as well, preferably with shelves above it, which are not visible in the 3D simulation. Please imagine these shelves.
I have also simulated other variants without a shelf, etc., as well as different arrangements of the toilet and bathtub.
Currently, I like variant 1 or 6 best.

Maybe you will come up with a great idea about what could be made out of the situation.

Thanks in advance!

My favorite would be option 4 - and only if a whole army of bath additives is to be lined up, option 1. But you do realize that the residual risk of not being able to fully practice all the days of one's entire life in advance is part of life, right?

Option 6 with the gap is not acceptable at all. Regarding tiles (which size is intended?), I find option 5 the best. It results in the fewest additional lines, etc., which greatly complicate the arrangement of the tiles.

My favorite would be option 4 - and only if an entire army of bath additives is to be lined up, option 1.

But you do realize that the residual risk of not being able to fully practice every single day of your entire life in advance is part of life, right?

It’s not just about lining up bath additives, but having a nice shelf. Next to the tub there is a 4-hole rim-mounted bathtub faucet, always reaching over it to get things I find difficult to imagine. Besides, you can also put plants etc. there.

What do you say about option 6? There is an ugly dark corner, but the wall behind the toilet is more symmetrical.

And yes, I know that I can’t practice everything. But when I turn to an architect and a project is moving in large dimensions and especially such planning is not reversible, I expect a bit more professionalism and also better planning as well as at least better communication about what is coming my way. The breakthrough for the exhaust pipe was not even visible in the plans I submitted for the building application. Had I known that, I would have even considered switching to a heat pump.

Variant 6 with the gap is not an option at all. Regarding tiles (what size is planned?), I find variant 5 the best. It results in the fewest additional lines etc., which greatly complicate the layout of the tiles.

Wall tiles are planned to be 30x60 cm. However, I will probably only tile the eaves side, not the side with the pre-wall.

What do you think about variant 6? There is an ugly dark corner, but the wall behind the toilet is more symmetrical.

I wouldn't see the difference between variants 6 and 1 as a man peeing standing up, because I don't have eyes in the back.

Wall tiles are planned to be 30x60 cm. But I will probably only tile the eaves side, not the side with the pre-wall.

Merciful Goddess – just tile the tiles up to the box between the toilet and the window, otherwise it will look stupid. How can such an aesthetic mistake come to mind when you are, on the other hand, a symmetry freak?