Family bathroom city villa - bathroom planning ideas?

These are not problems -

Oh, I see.

everyone simply has different requirements and priorities. I don’t have to justify myself for that.

Of course not. I even find the WC glass door very pretty. Just say that you are doing it for the beauty. That overrides all counterarguments. End of discussion. :)

There are simply too many fixed specifications for anyone to seriously come up with alternative solutions. Ultimately, you can now move or swap the bathtub and washbasin on the walls, but with the given specifications, that's as much as can be done.