Bathroom planning... can you take a quick look at it?

Ahoy everyone,

I have roughly planned our future bathroom here. Could you take a look and tell me what definitely doesn’t work, what is good, and where improvements should be made or compromises have to be accepted?
Regarding the displayed symbols, the shower is flush with the floor and the partition wall goes up to the ceiling. Basically, it’s only about the arrangement of the sanitary fixtures for now.

Best regards,
SaRo

Edit: it might be that the bathroom gets 4 sqm more if the staircase is mirrored in our house. What, how, and why is undecided for now. The current size is 16.1 sqm. With the mirrored staircase, then ~20.5 sqm

Perhaps you could explain what is supposed to be where, for example planunten below the bathtub.

And, are there sloping ceilings?

Only this one window?

Generally... I would not make the partition wall to the shower floor-to-ceiling, but about 210 cm high. This way, hot steam can rise upwards, for example to the window, and the shower will dry more quickly. In any case, also plan underfloor heating loops in the shower area.

What's that behind the bathtub and why do you want a 20 sqm bathroom?! For better acoustics?

Honestly: you have a huge bathroom with a dark hole as a shower, a toilet from which you look into a dark hole, and a bathtub that you have to walk around to get to.... what is that actually... a cabinet?....?

One is showering - one is peeing. Well, then you can watch each other. Not my thing. Only this one window in the large bathroom? Our bathroom is smaller (just under 11m2) but somehow more spacious. You shouldn't splash around extensively in the bathtub, otherwise there's a risk of flooding. Not necessarily recommended with small children - if it is only used by adults, then a freestanding one is okay. I would also plan for a double washbasin. Definitely more can be made of the bathroom.

Starting from the door on the left and moving clockwise once:

At the top left, the door opening into the bathroom. Next to it, the washbasin with the sink, then the window on the right wall. On the lower wall there is furniture, in front of it a freestanding wall about 1.60 m high attached to the bathtub. Continuing to the left on the lower wall, another partition wall with a radiator (towel holder). Then the walk-in shower 1 m wide, 1.80 m long. Finally, opposite the shower entrance, the toilet.

The knee wall height is 1.20 m. Hence my question whether all this makes sense or is even possible.
All floors in the house (ground floor and upper floor) are equipped with underfloor heating.

Regards,
SaRo

EDIT: Dear people, that’s why I’m asking what can be done with it :-)