Soundproofing - staircase from kitchen/dining area to the upper floor

With us, the stairs go directly down into the living/dining area. Upstairs, the hallway is quite small, and the doors are therefore close to the stairs. It doesn't bother us or the children, even though we have the bedroom doors open when they sleep. Of course, this is different for every family, but I think we would do it similarly again. It certainly has disadvantages, but I definitely prefer this over a layout where the stairs go up next to the front door and we would have to go outside into the hallway to get from downstairs to upstairs.

We live in a single-story bungalow, what you call the stairwell is simply a hallway for us. We have a soundproof door for this hallway, which separates the living area from the sleeping area. The children's rooms also have such a door. Currently, we still use a baby monitor, so with closed doors we can hear the children, but they can’t hear us. During puberty, they will surely be glad that no sound goes in or out.

For the time in between, of course - the soundproof doors do prevent calls for help. However, you can always adjust these sound seals so that they don’t close. So you basically have the choice at any time. And since it only cost about 200€ extra per door, it was a no-brainer for us. By the way: we also have such a door in the guest bathroom, which helps with mild flatulence.

I have no idea about classes, but we definitely have this seal, but no tight locks. The doors themselves are just as solid as the non-soundproof doors.

I should add. My voting should belong to the past. Since it bothered me, I changed it. Living, dining, and kitchen areas separated by doors and gallery closed off by a living room. I once thought everything open is cool. Today I would somehow separate the kitchen too, but unfortunately, with me only with too many compromises.

Without soundproof doors, my kids don't hear a call from downstairs, even if I go to the stairwell. Somehow I'm currently missing the ROFL.