Main bathroom (10 sqm) with open shower, any ideas?

Yes and no, I simply moved them down. The left wall is rebuilt in both versions.

Then you can also build the wall in combination with the corner bathtub. Masonry walls increase the area that needs to be tiled / plastered / painted again => costs. So you cannot really consider it in isolation.

First of all, thank you again for the effort!

I have attached your suggestion here again (it’s already been six pages ago ). For me, the corner bathtub with 1.89m is smaller than a 1.70m bathtub!? When I check on Re_ter.de and look at the sketches of corner bathtubs that still fit in our bathroom (1.5m width/length), I can only lie in the tub with bent legs.

Hello,
normally I'm not a fan of corner bathtubs. But somehow I had the idea that it might fit quite well for you:

I can also only lie in the tub with bent legs.

But with the 115cm internal length of your Kaldewei, it won't be any different. For comparison: our corner bathtub with a 150cm leg length has 127cm internal length, in which I can comfortably lie with my 180cm fully stretched legs.

Gladly

So, after a brief search, I found some corner bathtubs with an arm length of around 150cm and a floor length of, for example, 138cm (Galatea S202 corner bathtub SUN 150 x 150) or 131cm (corner bathtub Largo 150 x 150 cm (1032)).

Almost all 175cm bathtubs seem to have a floor length under 120cm.

You are already at Reuter, good. If you compare some corner bathtubs there at the real price with the Duo Classic, the additional cost for a corner bathtub does not necessarily have to be higher at your plumber. Maybe an asymmetrical one is also an option? Some are also higher, so you as a tall person can still bathe comfortably.