Semi-detached house: approx. 145 sqm with gable roof - potential for improvement in the bathroom?

Okay, I’ll rephrase my statement; of course, there are reasons we have considered. It seems more open and practical to us because:
- after entering the bathroom, we wouldn’t “immediately” run into a sink
- we would have enough space for 2 people in the sink area
- we get a little more storage space since we can easily place three tall cabinets on the wall next to the shower (this would be independent of which side you enter the shower from)
- the entire window front would be visible. As you suggested, we planned the wall in front of the toilet as a half-height privacy wall
- the bathtub could be chosen wider without the passage space between the sink and bathtub shrinking below 80 cm.

Unfortunately, I couldn’t draw the drywall partitions by the sink and the toilet in Roomsketcher, so they are missing. But we are aware that these will be added. We expect 10-15 cm of shelf space at the sink. For the bathtub, a bit more, so that a glass or a bottle of water can easily be placed there.
We initially added the bathtub because it roughly matched the dimensions of the built-in bathtub from the T-bathroom and even offers a little more space. But I’ll put another bathtub in tonight and take a look.

Why would you rotate the shower access? Just because of the bathtub or for another reason as well? Our thought was that this way the “wet area” is kept a little away from the door, and there isn’t always a shower mat lying in front of the door. Or are we worrying too much about that?

When it comes to the kitchen, there is definitely room for improvement; for kitchens, there is a dedicated great forum that I would strongly recommend checking out.

Why would you turn the access to the shower? Just because of the bathtub or for another reason as well? Our thought was that this way the "wet area" is a bit away from the door and there isn’t always a shower mat lying around in front of the door. Or are we worrying too much about this?

Because of the bathtub and the window.
The shower mat is of course an argument, with us it always moves along with the person showering into the basket... but I am just as against individual positioning of the sanitary fixtures if you can get a good "wall-to-wall combo".
Besides, I have a fondness for built-in bathtubs without disturbing corners or window edges... because otherwise it looks unplanned and accidental. However, everything will work and let's just take it as it is: with a semi-detached house you have to take the dimensions as they are.
If I were you, I would simply pay attention again to how it will be with the window regarding visibility inside.

As for the kitchen, there is certainly still some room for optimization,

I understood that it has already been ordered.

Tastes can be so different. We currently have the shower and bathtub in a row as a built-in block from wall to wall and would find a corner bathtub much nicer, as freestanding. I have now also built your suggestion once, did I understand it correctly? As I said, the bath mat would constantly be flying around somewhere in front of the door, and unfortunately, the options to add one or two tall bathroom cabinets disappear with this version.

The kitchen has not been ordered yet, we just thought about the distribution and considered where to place the oven or the refrigerator.

One more idea: Have the door hinge the other way. On the open door leaf, add the shower screen in addition to the shower screen from #16, but shorten it slightly. Shower head on the other wall. Corner tub in front of the window, toilet in between.

Another idea: hang the door the other way round. On the open door leaf, add the shower wall in addition to the shower wall from #16, but shorten it a bit. Shower head on the other wall. Corner bathtub in front of the window, toilet in between.

Did I understand you roughly right? The shower would be really nice and big like that. However, the short wall would only be about 1m long, wouldn’t water splash out while showering? Certainly a good idea as well, I should calmly work out a proper design with my better half this evening