Floor plan design for narrow plot, 2nd attempt.

Thanks once again for the hints.

As I said, we had planned a separate utility room. However, it was not practical for us to include it in the current floor plan. We currently live in a Vienna old building apartment, with the washing machine in the kitchen and drying laundry in the 12m² bedroom. Therefore, having the dressing room was an acceptable compromise for us.
...!

No, that is not a compromise, because you cannot compare old buildings and new buildings according to the Energy Saving Ordinance as well as drying laundry on a rack and a dryer. In the dryer, it gets intense; water is extracted from the fabric in a very short time. This affects the indoor air.
It would be like taking a hot shower for 10 minutes in the guest room just because the guest shower fits well there.
It will be humid in your dressing room. Not to mention the noise and lint from the machines.
Alternative: do it like the Americans and provide a niche for the two machines, e.g., in the hallway with doors and exhaust before it.
I don't see any controlled residential ventilation with you: in a year, you will have mold due to your compromise, and the clothes will be ruined.
A dryer in a living space is also a no-go.

Otherwise, very original, the house. It is a pity that the south side is blocked for you in the house. Did you ever try to include the west side in the living area, e.g., move the stairs on the ground floor further to the middle and the roof terrace with the bedrooms facing west?

Or/and upstairs a living room as a gallery and the children's room on the ground floor next to kitchen and dining area?

Yes, I think I would have an open-plan kitchen-living area on the ground floor, (freezer), shower-WC on the ground floor, while upstairs centrally for all the living rooms, then utility room, guest/office and parents' area.
On the ground floor also stairs in the middle, pantry below it, child’s room on the west, and shift the upper floor so the terrace appears in the west.
The stair location would be the same, only you go upstairs to the right side into the living room, from there the roof terrace is accessible. The rest falls into place [emoji6]

Have you ever tried to include the west side into the living area, for example by moving the staircase on the ground floor further towards the center and placing the roof terrace with the bedrooms facing west?

Or/and upstairs a living room as a gallery and the children’s room on the ground floor next to the kitchen and dining area?

Yes, I think I would have an open-plan kitchen/living room on the ground floor, (freezer,) shower toilet on the ground floor, while upstairs centrally for everyone a living room, then utility room, guest/office and parents’ area.
On the ground floor, the staircase would be central, with the pantry underneath, children’s room to the west, and shift the upper floor so that the terrace appears on the west side.
The staircase position would stay the same, but you would come upstairs on the right side into the living room, from there the roof terrace is accessible. The rest falls into place [emoji6]

Huh? ;)

Huh? ;)

Just for you

Exactly, these two additional areas are simply "extra." And yes, having it attached is of course a small advantage again. Once more... we have a similar design problem. You just have to be aware that it is additional exterior space. Both for the ongoing costs and the construction costs.

Again on the topic of washing machine/dryer and your last comparison. Please do not compare that. You are currently comparing a jute bag from the organic market with an ice cream carrier bag from Aldi.

Just for you

:) Wow, thanks. That’s pretty bold. Dining area below and living room above I find quite revolutionary. It would greatly enhance the rooftop terrace. But then you need a bar in the living room so you can mix your cocktails there. Very classy. :)

Our neighbors with two children have it similarly, but without DT: downstairs children’s rooms and a large open-plan kitchen-living room with a panoramic window facing the garden, upstairs then a cozy living room, to which the parents’ wing is attached. It also works with toddlers, but even better as they get older [emoji6] Here I just see more benefit from the sun in the afternoon!

Nice that we are chatting: the OP remains silent