Stairs in the living room as a hype - Pros & Cons?

The staircase planned openly into the living space - now seen more frequently with modern floor plans. It is not to everyone's taste and not always sensible. But it can also brilliantly inspire the floor plan.

What do you think of the idea? What are the advantages and disadvantages of the staircase in the living / dining area?
Here are a few examples:

Fingerhaus Fino 300, Danwood Park 181


Advantages
- often a gain in space in the entrance area or sometimes even an extra room as a result.
- the upper rooms are more integrated into everyday life
- high-quality staircases come more into focus and can enhance a room

Disadvantages:
- noise from upstairs to downstairs is always present
- odors from the kitchen require a good extractor hood
- children’s guests inevitably encounter the whole family (can also be an advantage. )

Our little house will have a straight staircase leading into the living area. Even with a basement. I think that looks nice and you can make the staircase a great eye-catcher. (Although I don't like the example in the picture at all). Since we are building with a basement, the staircase will be downstairs. Probably a concrete staircase with a wooden folding structure on top (or whatever it’s called).

Noise level... well... I also have that in a somewhat more open apartment on one level. Same with smells. The rooms upstairs will have doors for us.

Kids visiting through the living room... well, that's exactly what I want! Dad will be waiting then :-P

And sneaking past Dad waiting on the sofa when coming home late doesn’t work so easily either :-P

For me, the sound would actually be the problem. It looks nice, but we prefer the classic option, keeping both floors as separate as possible. The appearance suffers a bit from this, but the children sleep upstairs, and the parents can still stay normally downstairs. Practical, not stylish.

- the upper rooms are more integrated into everyday life

I don't see that as an advantage. Living rooms are called living rooms because they are rooms for living. I wouldn't want to turn that into a doorman's lodge. I don't share the delusional wish that one's own offspring would choose their friends more carefully (and therefore turn out less badly) if their friends had to pass by the parental TV-sleeping place. Even the MILF wants to have some peace on her bad hair day. Besides, I recommend considering the following before falling in love with a sculptural staircase: namely, whether you can and want to actually place your breakfast table where the photographer positioned himself for the optimal presentation of the staircase. In most cases, that settles the matter of "designer staircase - prince or frog?"

I really like stairs in the living area. But I am also a big fan of the open design. Personally, the noise level bothers me less. I actually find it nice that the children still have contact downstairs while playing. As teenagers, the door is simply closed, but I can still shout up well. Disadvantage: My children's friends might then see me lounging on the sofa in a bathrobe. But since I expect people to generally greet the host when entering the house, they would see me anyway.

We have an open staircase in our current townhouse. The stairwell makes the whole house very noisy across 3 floors + basement. With 2 teenagers in the house, it is actually never quiet. In the future house, the boys will each have their own front door and will be welcome and frequent guests with us. We will then basically be two again and will have an open staircase again, because from an aesthetic and "walking distance" point of view, it fits very well. Conclusion: With children, I recommend a closed stairwell.