ᐅ Bathroom layout with minimal wall space – Which bathroom configuration to choose?

Hello dear home builders and experts,

How would you arrange the layout in the bathroom? The walls should be built as little as possible. The requirements are for a large shower with a glass partition, a spacious double vanity, a toilet, and a freestanding bathtub.

Here is the floor plan – it can no longer be changed. Many thanks in advance for your creative ideas.

What have you already considered yourself?

By the way, a clearer sketch wouldn’t hurt either.

Edit: Why can’t the floor plan be changed anymore? Are the walls already built? If so, where are the respective pipes located?

By balustrade, I mean that from a height of 1.75 m (5 ft 9 in) there will be skylights installed, so there is still a wall you can reach.

@Maria16 Tonight, when I am home, I will make a proper sketch with some ideas from my side.

No, the walls are not built yet, and accordingly there are no pipes installed, but this is how my wife wants it, no other way.