Floor plan design single-family house approx. 170 m² + attic as a modern clinker house

Addendum to the pantry: An alternative might also be walk-through access via a tall cabinet door. We can well understand your rejection of sliding doors. However, a door there would collide with the side terrace door.

Yes, you can do it that way with the bedroom. It’s somehow a mental thing that I can’t come to terms with it yet, but in that way it is a totally rational solution to the "problem".

That is somehow cute.

What would you consider the minimum width for the children's bathroom?

Well, everything has to fit in. So it very much depends on the door and the shower. I would rather make it dependent on the bedroom wardrobes.