Floor plan 2 full floors - Feedback / Criticism?

The dimensions of the bathtub are probably more standard size, right? At least the wall between the windows is 1.75m, which doesn't leave much space for a "large" tub.

The tub will sit like a foreign object between the floor-to-ceiling windows. One should plan a tub with surrounds or pedestals that then serve as furniture for storage and tiled as a transition.

Thank you very much for your numerous comments.

I will try to address everything step by step...

We have actually considered the idea of a chamber under the stairs.
This wouldn’t make the utility room any bigger, but it would provide a second small storage option.

The potentially "dark" hallway does worry me a bit, but I just hope that the large window at the stairs still brings brightness?!

Changing the stairs is rather not an option for us.

The windows in the bathroom are not arranged symmetrically, but this is rather secondary for us; we plan the house from the inside out.

We have an appointment at the design studio next week because I am still unsure about the arrangement of the fixtures and the windows.

The windows are floor-to-ceiling because we find them chic, but they are indeed quite daring...

I have also considered possibly enlarging the bathtub to 1.80 m; do you think that would be enough?

Accordingly, the windows would be somewhat narrower.

They are arranged to the right and left of the tub to prevent casting shadows on the mirror...

The variant with the "long, not floor-to-ceiling windows" interests me, could I see a picture of that?

Preferably "in real life."

For the bathtub, I had also thought about a half-free-standing one; what do you think about that?

Because this bulky one bothers me as well.

What do you think about the overall concept?
I think I can manage with a utility room that’s too small and a bathroom that’s too large.

Placing the utility room behind/next to the bathroom is an unusual but interesting approach; however, it would then be quite small... or am I misunderstanding something?

I can gladly draw a site plan tomorrow; what exactly are we looking for in terms of potential?

I would add a large window to the stairs; that would also benefit the hallway on the upper floor. Windows in the bathroom are very limiting; I would reconsider and opt for a completely different furnishing. Regarding storage options: if you have hobbies, space can become tight. I would miss the access or openness of the kitchen. I would open the kitchen more towards the hallway and arrange the island across. There is enough space.

Yeah, senselessly large bathroom, impractical dressing room and therefore too small bedroom, WAY too little storage space. Will the shower on the ground floor ever be used? Overall, though, a functional floor plan.

The bedroom is already a bit tight with 3m width, depending on your bed. I also wonder why you need a floor-to-ceiling window plus a second window in the bedroom. I know a case where they have no other option to rearrange the bed because of that; their room is also rather narrow because the dressing room was planned too wide (wider than here).

The bedroom door is too close to the kids for me.

The bathroom is way too big, I would prefer to have the washing machine and dryer on the upper floor.

Everything is just designed from the outside for symmetry (for the neighbors).

I would also swap the cooktop and sink in the kitchen. You spend more time and more often at the sink than at the stove. With the sink at the back, you will quickly be working with your back to the room. I personally would have swapped the kitchen and living area. That way, there is hustle and movement in the large room, and the sofa is in the corner for retreating.