Floor plan single-family house city villa approx. 240m² without basement

I don't really like the "open living space" that way. The kitchen almost feels like a closed room because of the pantry, and the dining area doesn't seem particularly spacious either.

Regarding separate toilet + shower room upstairs: In some other countries, that is quite common (I know it that way from Japan, surely there are others). Of course, the drains have to be suitable (the shower is directly above the air, if I see that correctly – no idea if that works), but for me, there's not necessarily anything against having them separate. I think often the rooms are placed next to each other anyway, just because of connection reasons (but that doesn't necessarily have to be the case).

A friend of mine wanted that too (without any Japan reference) and in the end, he was persuaded to put a toilet in the larger bathroom "because that's how it's done"... and now it's basically only used if overnight guests use it before/after showering (so practically not at all) (otherwise guests just use the separate toilet).

That a free person may also invest their money in square meters is one thing. The other is that, in my opinion, it makes a difference whether excess square meters are built out of desire (i.e., with the attitude "I allow myself that") or whether they involuntarily arise as a "by-product" of unprofessional planning. In the latter case, the additional costs are regularly not associated with an increase in enjoyment.

Number of people, age: 2 adults, 1 child currently
Space requirement on ground floor, upper floor: Rooms should be a comfortable size without being wasteful

Price estimate according to architect/planner: 700k
Personal price limit for the house, including equipment: 800k
Preferred heating technology: geothermal energy

We had actually decided against the architect so far because we had quite clear ideas.

It was already our wish to have an entrance situation that does not feel cramped and also to give space to the "traffic routes" otherwise.

Size of the plot: 1170m²

What are the exact dimensions of the plot? When I scale your ground floor and your plot in my program, it puzzles me...