My floor plan is (almost) ready, now I need your help :-)

Why do you want to build such a small dressing room? Have you ever thought about doing without it?

I also find the floor plan quite successful except for the dirty area right in front of the stairs, but you definitely had that in mind. :)

As for your bedroom solution: What do you think about closing the door to the bedroom and then accessing the sleeping area through the walk-in closet? I would then place the bed on the other side and plan the walk-in closet larger, around the corner or something like that. I'm not exactly sure if the space would work out that way. But as I imagined it, I roughly sketched it out. :)

In my opinion, the bedroom is too narrow at 3.3 m. The dressing room is also botched like this.

I think the idea from is quite good with the bedroom: bed against the straight wall, then suspend the entire slanted wall with sliding door elements about one meter in front of the knee wall: this creates a lot of storage space for clothes and because of the depth you can put shelves for seasonal clothes and boxes with Christmas decorations behind the clothes rails.

Width of 3.30 is not much, but in my opinion it works.

Regards Yvonne

Thank you, I hadn't thought of the idea with the sliding doors yet. How does it look in terms of the structural stability, since a steel beam was actually planned in the wall of the dressing room, can I simply place it in the area where the door is currently located?

A structural engineer will be able to calculate that correctly for you. I would not rely on do it yourself for that.