Bathroom planning - alternative ideas?

Hello,

maybe someone here has an idea of how to change the room layout.

The window faces east. The red line indicates the height of 2m.

The idea is to work with a pre-wall installation where the sink is, either up to the middle of the sink and shower, which could look a bit "strange" because then there is the "step" and it continues on the normal wall to the shower, or the pre-wall up to the shower, which narrows the entrance to the shower slightly. Another option is the pre-wall installation across the entire width of the wall (sink, shower). The shower would be moved into the room by the width of the pre-wall, thus creating a shelf inside the shower extending to the corner. There is no "step" along the stretch.

The shower is 90x120, the bathtub 170x75. The dimensions of the bathroom are approx. 2.8m (window-door direction) and 3.10m the other side.

There is also the idea to extend the pre-wall from the toilet around the corner, practically between the toilet and bathtub, to create some shelf space there as well. Thus, the (pre-)wall would be a bit higher than the edge of the bathtub.

And can anyone say approximately what costs one should expect for the version with the pre-wall across the entire wall or the small wall between the toilet and bathtub, or the wall behind the door to the shower, which would possibly be half-height with a glass wall installed on top?

Thanks in advance for feedback!
Regards

What else is movable? Windows? The square, is that the downpipe? WS is to be done by you in EL? The tiled partition wall of the shower?

The window should remain as it is, otherwise it will no longer be symmetrical with the window in the neighboring room when viewed from outside. The door can be moved. Yes, I think it is a downpipe. Below it on the ground floor is the guest toilet, also with the downpipe, therefore it is congruent.

Also, there is the idea to extend the partition wall of the toilet around the corner, basically between the toilet and the bathtub, to create some storage space there as well. This way, the (partition) wall would be slightly higher than the edge of the bathtub.

That would look like a halcruise for the toilet. Better orient yourself towards making a platform at the bathtub height, creating storage space for both objects between the toilet and the bathtub.

But doesn't it exactly match what I also wrote? A separation between the toilet and the bathtub in the form of a wall that could, for example, include a shelf, once from the perspective of the bathtub and on the other side from the perspective of the toilet. Or did I misunderstand you? A podium would for me only be a kind of step, which I can't really imagine in this context right now.

No, a pedestal is the same height as the tub. You rather suggested a partition wall ([Halskrause]).