Renovation planning for existing property - tips and suggestions requested

The OP possibly wanted to paint the reading corner and open the ceiling

Ah, I now also recognize the upper floor :)

I wouldn't make a gallery since it would then be located above the kitchen. It actually doesn't sound nice up there when it clicks. Besides, there is also the balcony to be accessed. The house, including the upper floor and the idea of the gallery, actually has a lot of similarities with a thread from a few weeks ago – the title was about the ceiling height. You can look it up.

@ Regarding the reading corner and the number of children's rooms, I would still like to point out: Currently you are planning with one children's room at the beginning of your 30s. I can tell you from my environment that one child can very quickly become two once the first child is there. I even have several examples where people only wanted one child and then suddenly there were two... So I would at least plan for 1 children's room + 1 guest room. One more note about your living room: How much wood do you plan to burn per season? I am a diligent heater and therefore plan with an optimized route between the firewood storage location in the garden and the firewood storage space in the house. Every time you bring in firewood, there is dirt involved. For this reason, the route must be as short as possible. Would you bring the firewood in via the terrace? Regarding the bathroom on the first floor: I understand that you have the space for a bathroom in this area. You could try planning out the bathroom, i.e. where the shower, bathtub, etc. will be placed. Then it would be easier to assess if there are areas that would be empty and you might perhaps prefer to allocate another room instead.

-> corner of the house/extension visible, leave 1.50/2.00 meters free, then a wall panel...

Can you explain to us once again exactly what you mean by that?

Height of the rooms: no problem, have a look at the last 5 weeks in the forum, same topic

We have followed the topic. Actually, the idea of the air space even came from that, as some contributors believed that the feeling of space in a room with a large floor area but relatively low ceiling height suffers considerably. Maybe we also misunderstood something there; we will reread the topic again.

Currently you are planning with early 30s with one child's room.

Well, actually we are planning with one child's room on the upper floor and if needed with two additional children's rooms in the attic. As a guest room as needed, we are currently planning to use the study on the ground floor.

Would you bring the firewood in over the terrace?

We will probably plan (have to) another breakthrough in the stairwell. Currently there is a passage between the house and the garage to the garden. After insulating and facing the main house and facing the garage, there will probably no longer be enough space for a proper passage at this point—especially since if you do without the passage, you could design the entrance area a bit more freely. Therefore, we plan to install an additional door to the outside behind the front door in the northern outer wall (in front of the stairs down to the basement). I think this one would also be more suitable for transporting wood.

I understand that you have space in this area for a bathroom. You could plan the bathroom, i.e., where the shower, bathtub, etc., will be placed.

We have already contacted a sanitary specialist store for planning the bathrooms on the ground and upper floors. If it turns out that our wishes can also be realized on a significantly smaller area, then a changed floor plan of the upper floor would actually be considered. We just want to avoid that the corridor on the upper floor—like in the current unrenovated state—gets no daylight at all. Also, one should be able to access the balcony without necessarily having to walk through a child's room or bedroom first. As an alternative, there would probably only remain a long corridor with a balcony door in the southern outer wall, which would then again limit the usable area of a full room instead of the reading or play corner.

Visually as well as practically: leave a wall panel standing... -> leave the corner of the house/extension visible, 1.50/2.00 meters free, then a wall panel...

Room height: no problem, check the forum in the last 5 weeks, same topic

I would leave the corner between the living room and dining area standing. It’s nice. However, I would leave a wall panel standing (about in the middle). As a boundary, an emphasis of the open space, as an accent and/or as a privacy screen...

Sorry, it was written a bit awkwardly, since I first spoke of a short wall at the sofa...

So a wall at the bottom of the plan as a "termination" of the kitchen island to separate the cooking and dining areas?