Bathroom is not working anymore

No, don’t give up on the toilet. You especially need it in the bathroom as you get older, because the body is no longer necessarily 100% controllable. The bathroom is not too small either.

Is this a prefabricated house? Then the installation of the lines is already included, right? What else can be changed? How high is the parapet?

Is that a prefabricated house? Then the installation of the lines is already included, right?

No, a timber construction does not automatically mean ready for installation with lines. Here, the lines are visible even before the wooden stud, and the drawing says "symbolically furnished."

I can't present plans of the whole apartment right now, because I don't have any proper ones

Here are some people who can definitely read "no proper" plans at least much better than none at all. How is your apartment integrated into the building? - show the floors above and below! I am amazed at how much help you are getting here despite your poor orientation among the discussants. I am certainly not the only one who prefers to discuss based on facts rather than creating a completely wrong idea of the situation in one's mind. One of your drawings suggests a penthouse or an old building attic conversion, the other is probably simply a trace (from which we cannot tell which details were left out).

If the house is set up - it should actually be done this week

Will the house be set this week? Is it really a prefabricated house?
(I notice that you don’t correct assumptions here and also don’t answer questions)

I can’t currently present plans of the whole apartment, because I don’t have proper ones - my folder full of paper is worth very little.

Now don’t exaggerate. You must have something if the installation date is this week.

After many hours, questions, plans etc., the purchase contract for a condominium was finally concluded in November and since then I have been busy planning

I don’t believe it. That’s just a few weeks ago…. If someone has been planning for half a year and has already ordered their kitchen, then they can really get annoyed.

Thanks for the drafts, I wouldn’t have come up with any of the variants on my own.

But even with this info and your sketch (dark washbasin, tub with a big pedestal, toilet in the eyecatcher area and shower with sightline through the door), I question your planning talent.
I think you can be glad that he changed the windows there so that you can’t implement your plan.

I have visualized the draft from the BT. If there is interest, I can also change it.

The bathtub is 1 m wide at the head end.