House and floor plan planning - First architect's plan is available

I live here in the midst of the New Lake Land

The house doesn’t really fit architecturally at Cape Zwenkau. I once stayed there in a holiday apartment, and I can particularly imagine living very nicely in the newly developed areas. What takes some getting used to is that the old village centers in the New Lake Land somehow seem "left behind" compared to the fancy new residential areas.

The kitchen meets your needs (not important) but probably not those of a buyer family. The two studies correspond to the "classic" children's rooms - for HER and HIS rooms, I would expect, for example, a large sliding door. The oversized bathroom with garden view is probably less appreciated by a potential buyer family than an additional storage room or a dressing room, etc. ...

Regarding the topic of kitchen separate or open, opinions in our circle of acquaintances and some sales professionals are pretty evenly split. The Her and His rooms intentionally have fixed walls/doors, as they, as you rightly say, correspond to the classic children's rooms and are therefore more advantageous for potential future buyers.

If you want to sell the house later, it would make sense to install a lintel between the kitchen & dining area, so that the wall underneath is not load-bearing and can easily be removed, or a sliding door can be installed where you might currently plan a serving hatch.

If we were to build again, I might consider building a his and hers bathroom; one with a shower & sauna, the other with a bathtub; this also works well for families with children or guests in the house.

Now that we are older, we also sleep separately; one of us sleeps very restlessly and the other wakes up easily... things just change; sometimes it's a different rhythm or whatever.

Maybe I am really undemanding

I don’t believe that; it can also be a demand not to have too many and above all unnecessary "demands". Frugality or simplicity is, in my opinion, rather something desirable and has a calming effect. "Demand" on my part was therefore not synonymous with consumption or possession.

Many practical considerations play no role for me. For example, how quickly I get dry from the car into the house,

....my absolute agreement; I wonder anyway what all those, in my opinion, often over-optimized people actually do with all their newly gained time......probably optimize other things

I like having a lot in common with you. But not this, because I was not dragged along but worked and argued for years to be able to move here. It is absolutely wonderful here, but please don’t tell anyone, otherwise it will get too crowded here.

....that’s exactly why I prefer to describe it rather bloodthirsty; of course it was my free decision, which I would make again anytime.

It will be a standard L-shaped kitchen. Fronts Bodbyn from IKEA. I like it and it doesn’t have to be more than liked.

Same with us, within the Ikea system we put together a kitchen that will soon be moved for the second time. Of course, it only has to please YOU, that is exactly what I mean.

Classical music is something I want to share with other people. At my former residence, I went 1-3 times a week to a concert, opera, or ballet performance. The effect of the music is naturally quite different in a concert hall; a private music room can’t compete with that, which is why I do not want it either.

I understand that well; it was not meant as a replacement, more as an extra if liked.

If you want to sell the house later, it would make sense to build a lintel between the kitchen & dining area, so that the wall underneath is non-load-bearing and can simply be removed, or a sliding door can be built where you might now plan a passthrough. If we were to build again, I would perhaps build a his & hers bathroom; one with shower & sauna, the other with bathtub; that also works for families with children or guests in the house. We now sleep separately as we get older; one of us sleeps very restlessly and the other wakes up easily... things change after all; sometimes there is another rhythm or whatever.

Exactly my point of view, these things can now be wonderfully implemented since the children are out of the house. I never wanted to preach to you about how you should build your house or live your life, I think you took it that way. I just somehow got the impression while reading that you could do some things differently. I have no doubt that you make things nice for yourself, how could I. For myself, I have taken some things from the forum, even things that I did not quite like at first. That is exactly what I want here, to break up some old and familiar things and see if they fit into the new.

Regarding the topic of separate or open kitchen, opinions in our circle of acquaintances and some specialist retailers are pretty much split 50/50.

That is certainly correct, nevertheless the "usual" use of the dining table is for eating, at least in families, and should therefore be close to the kitchen area or accessible with short distances. I myself am not necessarily a fan of the open kitchen either, so we have a sliding door made of frosted glass between the kitchen and dining room. In any case, I find the arrangement of the kitchen furniture shown in the picture to be unfortunate and it blocks options for oneself or future buyers from the outset.

Whoever has so much money that they don't know what to do with it won't care about a possible sale, they should build however they want and if the house is demolished in 10 years, that doesn't matter either! Otherwise, the OP is just resistant to advice!