Bungalow floor plan ~16x9.5m (outside) on 1000m² with existing old building

"It is particularly annoying when the duplication follows at a distance of just three meters."

Then I’ll ask for an idea/solution that I don’t see, since I don’t prefer an open kitchen or kitchen island, but would like to keep the kitchen as a separate room.

I only see:
- Either change the floor plan, but how?
- Kitchen island with a small seating area at the kitchen island

Idea/solution, which I do not see,

We also cannot see it: simply because currently there is only one table in the kitchen, and nothing else. The enclosedness of the kitchen is fine. Linguistically, I am not quite clear: do you want a kitchen with or without an island, and should the general layout rather be an L or a U? For the dining table, I would decide either in the kitchen or in the living room. For larger gatherings you can extend and place the table in the passage, which is wide enough. I would rather keep the table in the kitchen with the current floor plan, because the one in the living room is almost just an obstacle. With two tables (and frequently opened passage) you just always see from one table to the other, which is currently unused, which is more comical than sensible. The purpose of cooking island seating groups escapes me: one should have breakfast in peace or not at all, eating on the fly is unhealthy. Or is it needed as a parking spot for guests with two left hands, who otherwise would only be in the way while cooking (like here the living room dining table)?

Maybe you should first think about how your dream kitchen looks and then design the floor plan accordingly. We can’t tell you whether the dining table is better placed in the kitchen or in the living room; you have to decide that for yourself. What are your reasons against an open kitchen?

If so, I would plan an open-plan kitchen and the living room separately without a dining table. Open-plan kitchen by the terrace Children’s room in the west is ok

Ok. I would change the topic kitchen as follows. - There will be only 1 table in the kitchen, which can be extended into the living room area if needed - possibly extend the kitchen wall further towards the living room to a.) get a slightly larger kitchen b.) to possibly optimize the statics Are there any opinions or suggestions regarding the rest (except kitchen + dining table)? Thank you very much Michael

First of all, I have to say that the layout of the rooms is well adapted to the foundations prescribed by Town & Country as well as the property. Although I haven’t looked at the other thread anymore, the arrangement makes sense.
Getting to the point: swap living room and kitchen. Swap sofa with kitchen cabinets.
You will get a nice large eat-in kitchen on the terrace with access to the living area, which you can possibly also close off at times.
Therefore, I would leave the open access (old living room).

whether I really have to plan my kitchen first before creating a kitchen floor plan à la "Design follows function".

Well, at least you should have calculated in advance how many tall cabinets are needed (e.g., oven, refrigerator, SBS) and how many meters of cabinets as well as how many meters of countertop are required. Since your utility room is limited in space and also quite far away, everything should fit there.
If there is also the wish for an island, then bon appétit.

The details:
4.50 m depth for sofa/TV is plenty, on the other hand, an open wardrobe is awkward and the hallway, if it were to be extended (I will get to that right away), is too narrow.
Make the living room width 4.20 m and include the WC. The hallway reaches 1.70 m!
Then close off the wardrobe as a room with a door. Door at the bottom of the plan, opening outwards.
If necessary, pull the partition wall kitchen/living slightly downwards on the plan so that it aligns.
If it bothers you to take space away from the living room (actually you have less space in the current state), then pull back one children’s room wall a bit so that the hallway gains space. The children’s rooms are quite large and can tolerate one square meter less. You can balance the size by mediating the partition between the two children’s rooms with an angle where you can then inset the closet for the smaller room.
Make the 3 meters in the bedroom 3.20 meters. Then you can also place a common wardrobe there.
The hallway there again has the same 1.40 m width as at the entrance, but is comparatively wide since it is not long. It can tolerate 20 cm less.

I would be happy if you implement this for yourself and us.

Edit: rotate the table, this creates more space and also more generosity for the eye.