T-piece: sensible division/dimensions

I also cannot understand that with such a large bathroom, toilet, and bidet are squeezed so tightly into the corner.

For better understanding, here is the complete plan of the parent area.

I would probably still extend the wall by 10-15 cm.

Why is there even a door in the bathroom? Your dressing room is open to the bathroom, and you have also enclosed the shower and toilet, so nothing is visible even to unwanted guests.

When passing from the dressing room to the bathroom, there is a sliding door (is not shown on the plan). We want to maintain different room temperatures as well as possible. Especially in winter, the bathroom will be significantly warmer than the sleeping area.

Making the T even wider will be tight. If the washbasin with a depth of 53cm is added at the front, there won’t be much space left towards the door anyway...

So either no doors at all or 2 doors or?

What about the moisture from the bathroom, do you have a ventilation system or something similar? Because otherwise it ends up in the dressing room, which I wouldn't really like...

I would turn the dressing room around to face the bedroom, so that the bathroom and bedroom are separated, or just leave it completely open

Regarding doors, see my previous post. We are getting a central controlled residential ventilation system.