Bungalow floor plan 150 sqm, closed kitchen, covered terrace

And? Is that great?

Yes, the three swear by it.

Many children sneak into their parents' bed at night -

No sneaking. It sleeps there all the time. Well, times are changing. In the past everything was separated immediately, now it's all about cuddling.

Thank you for the numerous responses from you. We like the proposed solution with the [Kinderzimmer] and will pass it on as is. We wanted to keep the point of a separate area for parents and child/guest. And if someone comes upstairs, then we as parents with a small terrace and whirlpool. Feel free to make changes to our floor plan, a picture usually says more than an eternally long text. Regards Alex

Then make the terrace stable. Recently a balcony gave way under a paddling pool.

No, seriously, the roof extension must be taken into account. You need a staircase.
Take a look at Rensch-Haus Madeira. It has one less room, a spacious hall + storage room that offers space for a staircase, separate child's room (which is really rare in sample floor plans).
It seemed very spacious. Maybe reduce the parents' room a bit and make the kitchen and technical room bigger.
You can get through the ground floor with a walker. I would find that really good.

Gussek Haus Jura is an L-shaped bungalow with an expanded roof.

Hello, I have looked at both. We find it absolutely terrible when I enter a house and after one meter there are already 2 doors leading to the parents' and children's bedrooms, that is a no-go for us. I am attaching a picture of a floor plan idea we had before we came up with the idea of making a slanted entrance. What we liked about this was that the parents' and children's areas are not immediately accessible but still close by. Unfortunately, it is not dimensioned. Please disregard the storage room.

Corridors take up space

Why didn’t it become that?
Without dimensions, it is difficult to say anything. The parent part needs to be arranged differently
Looks better

Nothing rushing. It’s always sleeping there. Well, times change. In the past, everything was immediately separated, now it’s all about cuddling.

Some separate when it’s only about cuddling.