Bathroom design - many ideas

It's silly that there are such great 3D room planners because you can experiment so much that afterwards you don't even know what, how, and where...

I have attached them, maybe one or the other expert among you can say something about it or give recommendations about what is practical/impractical and makes sense and what doesn't.

Velux window size 78*118 cm above the toilet, window size w=1.37 m h=1.20 m double-winged, 2 sinks (one of them possibly higher for me since I'm 1.91 m tall and always have to bend down at the standard installation height which eventually hurts my back), wall-mounted toilet with built-in wall flush tank, one towel radiator, a freestanding tub, and a shower (shape, size, etc. still open whether it will be a semicircular corner solution or a three-sided open solution in round or angular form, etc.).

The freestanding tub would fit nicely on the short wall behind the door, but then the shower would have to be next to the window up to the slope with three-sided glazing, which would certainly look nice and would be new, not standing in a sealed-off corner. The glass would also let enough light come to the mirrors of the sink.
A freestanding tub near the sloping ceiling is then quite a matter regarding getting in/out for a man of 1.91 m like me; I can't really assess that well in the 3D planner and I don't have such a thing in real life...

By the way, there would be a pleated blind in the window that can be pulled up from the bottom to half the height for unwanted views, which will probably happen less often since we only have bungalows next to us on that side

How high is the knee wall? Especially if you are very tall, it could be inconvenient under the slope, with going to the toilet and getting into the bathtub.

Besides, I know it this way, that the sinks should be placed so that the light comes from the side and not from behind. However, we only have an appointment for the bathroom planning on Saturday.

Are your windows already fixed? They are placed differently in your plans.

Well, until now I have always had the sinks in my apartments or at my parents' place with the windows behind them, which was not a problem. The knee wall is 1.0 m high, the roof pitch is 45 degrees, room height is 2.48 m... in other words, after one meter you have 2.0 m of standing height... Currently, in our apartment, we have the toilet positioned that way as well, which works well I must say; with a lower knee wall that would no longer be possible. The window size is fixed, but the position is not. It varies in position due to the different location of the shower (the window cannot be in front of the shower), so we are (up to the limit of what is possible due to the sloping roof) flexible where the window is located.

So, having a window behind your back would also be a no-go for me, but that also applies to the window in the slant, possibly under the toilet.
A washbasin area is a kind of workplace where proper daylight is often needed. A woman will also live there, and she might want to apply makeup evenly at times.
A window above the toilet would make me feel uncomfortable, so a subjectively bad feeling... as if someone could be looking at my backside from above.
If the bathtub is under the slant, you should actually be able to get in and out with a height of 1.91 m.

Maybe the slant of the door wall can be used as an element in the room?
Do you want a normal shower tray as well as a normal built-in bathtub?

A window above the toilet would make me uncomfortable, so a subjectively bad feeling... as if someone could be looking at my bottom from above
If the bathtub is under the slope, with your height of 1.91 you should actually manage getting in and out.

No one can definitely look at your bottom from above. Unless the chimney sweep is standing outside. Then it doesn’t matter where the toilet is located. Advantage of that: the standing urinator even has a nice view
I don’t think the window recess is badly used as a bathtub entry or for the toilet.

From above, nobody can definitely look up your butt.

That's why I also write from a subjectively felt perspective. One person is more sensitive about it than another.

I would place the toilet on one side of the window, the tub on the other. I think that creates a harmonious wall picture from the inside. Possibly the washbasins to the right of the door.