Floor plan design for bungalow with basement - 140 sqm - slight slope

I think it is wrong to persuade someone to have an open kitchen when they actually want a closed one. Ultimately, it was about the narrow hallway that was created and not planned away.

yes, you should see the open kitchen somewhere "in action". The main argument was the smell and the mess. Against that, you can do something even with an open kitchen, and a closed kitchen doesn't really offer any advantages.

Otherwise, I like the plan better, but the hallway is still ugly. You enter the house and the first thing you see is the basement stairs. You won't get around a U- or L-shaped staircase. You could then put it in the coat closet niche. Access to the basement for large and bulky items would then be from outside.

I moved something around a bit with Paint. What I notice with our bungalow (and every other house): having the toilet right next to a bedroom is unfavorable. My husband occasionally farts and wakes our daughter. It resonates so nicely in the bowl. In your case, the stairs should also be fairly central to the bedrooms and bathroom. You will be hauling dirty laundry down; eventually, every step will be annoying. In addition, you still have a guest bathroom downstairs. You could use that undisturbed from the public area. Quickly dash down to the basement in your underwear because daughter is blocking the bathroom, son is sitting on the small bathroom throne, mom is chatting with the neighbor in the kitchen, and you urgently need to shower. Basically, you should also consider whether there need to be 3 shower bathrooms or if the one in the basement is enough and the small bathroom upstairs is only for basic use.

Otherwise, I like the plan better, but the hallway is still unattractive. You enter the house and the first thing you see is the basement stairs. You will have to use a U- or L-shaped staircase. You could also place it in the wardrobe niche. The access to the basement for large and bulky items would then be from outside.

We are currently also discussing the option with the staircase in the front. A staircase at the back is rather not an option. I find it rather "inappropriate" in the private area.

The hallway results from the side entrance away from the living room. Entrance where the kitchen is now. Rotate kitchen, dining, and living room. Office to the north then. Turn the stairs... this optimizes the zoning, and you don't always have to pass through the private zone when you come in from outside to the kitchen during the day. Ideally, the children's room would also get a south-facing window.
The garage position is probably not optimal on a slope?!

I like your approaches, but they cannot be implemented like that in our case.
Perhaps a few thoughts from me on why the design ended up as it is now.

In my view, garages can only be where they are now. Not in the southwest, because I don't want a shade giver in front of the house ;). Placing garages in the back also doesn't work because I would have to put them lower (I don't want to go "down," and I don't have/need a huge paved yard), and piling up soil so the garages come up to street level is not possible.

If the entrance moves further to the left, it comes at the expense of the terrace and the front garden.

We are also currently discussing the version with the stairs in the front. Stairs in the back are rather not an option. I find them rather "inappropriate" for private use.

But always keep in mind that you walk down there every day and always pass through the dirty area at the entrance. My parents also have the stairs leading up directly next to the front door. After a while, you tend to practically jump onto the stairs at an angle so that your socks don’t end up in the sand (I am affected by childhood experiences).

After a while, you tend to jump diagonally on the stairs so that your socks don’t land in the sand (I’m damaged by early childhood experience).

Good point.

We just had another idea.
Place the straight staircase where the long hallway by the kitchen was in the first draft. I’m just sketching how it could look then.
The staircase would then be somewhat "darker," but away from the hallway.

Good idea, 1-1.2m wide, plan lighting (LED panels) with motion sensors, hands are often full