Single-family house - Opinions on our design

The way to the bathroom would be too long for me. You don't use it only in the evening before going to bed or in the morning, but also during the day. As you get older, the time window for having to go and relieving yourself also becomes smaller. If you are downstairs on the ground floor, the way can already be too far. There are three! doors in the way. I also consider it very inconvenient to always have to go through the bedroom: anyone still sleeping or just dozing there will be disturbed.

The central staircase may give the ground floor a certain flair, but at the same time it is also to some extent a liability for the upper floor. In combination with the [Südzimmerdogma], [Eckfensterdogma], and [Kinderbalkondogma], this can possibly create a self-imposed planning imprisonment.

I therefore recommend exploring further variants in which one of these sacred cows is "sacrificed" each time.

In each case, three outcomes are possible: the change is improving / neutral / worsening or at least not worthwhile.

I would try it in the following order: 1. without or with a smaller children's balcony, 2. children's room not necessarily with corner windows, 3. children's room not necessarily (both) south-facing. If all this does not bring any significant perceived improvement, then I would tackle the central staircase and place it more to the side or even completely at an edge.

Hello, I see no necessity to have a separate children's bathroom. What speaks against leaving it out?

Hello, 3 girls in the house, that speaks for it.

Hello, 3 girls in the house, that speaks for it.

That is an argument [emoji2] ...but not an argument for a bedroom as a walk-through room!

Just imagine you have a cleaner or ironing fairy someday, and you are lying sick in bed. Well, good luck.... [emoji23]

Imagine you have a cleaning lady or ironing fairy someday, and you are lying sick in bed.

yes, and I would also leave out the terrace, just imagine if a highway were built there, then no one would want to sit there.

Let's stop with this construction of some future fantasies. Could, should, would.
You simply can't build on that in the truest sense of the word.