Floor plan 160 sqm single-family house - improvement ideas?

The second floor plan (linked by me above) is not up for discussion, I have already discovered the disadvantages there. It was only about the idea of the extension.

Various catalogs are available and we have already visited model homes several times. Without an open space, there is a lot of floor plan selection here, with open space practically nothing.

I also really like the linked floor plan here in the thread from a Hamburg architect. Do you think this one is better regarding noise transmission, etc.? If the children's rooms are moved here on the upper floor to the left and right corners (maximum distance to the living room/open space), would that be a solution that can be implemented?

No, it is not better in terms of noise transmission. The rooms are more usable.

I think there are already quite a few with open space and quite a few model homes. You simply have to reconcile living space, budget, and needs. An open space/gallery is quite easy to cut down.

Really take a look at model homes and let them have an effect.

As mentioned, various model homes in the region have already been visited. It is just somehow not so easy to recognize the advantages and disadvantages of the floor plans and especially to improve the disadvantages. At home, there is definitely a stack of catalogs that I have already worked through several times. I just don't really know how to get from working through them to the desired floor plan...

1 You already have a room program
Then you need a feeling for spaces
Look at every apartment, every house, also take another look at the show homes and note, whether in your head or in a book, what you like and what you don’t.
Toilet door doesn’t open all the way
Sink too small
No, the countertop in the kitchen would be too small for me
Bed looks nice under the sloping roof, sit on it and stand up.
Take your time especially at the show home exhibitions. Not just for conversations. Walk through the house. Imagine you live there

Take a floor plan that you like and draw your furniture to scale. Often there are small tables for max 4 to 6 people included. Maybe you want a big one like we have or you want a huge upholstered lounge or a kitchen with an island

You don’t need a perfect floor plan. Our house has nothing, absolutely nothing in common with my hand-drawn floor plans.
However, you help the architect if you say in the conversation
we need 6 running meters of wardrobe, the office needs a desk and a height-adjustable CAD table, in the living room we need shelves for 1,000 books. Everything that is not standard.

Take your floor plan. You put some thought into it. Furnish it. Try out different scenarios.
For example, bedroom currently 140 cm maybe later 200 cm. Does a baby crib fit in? etc.

Hello,

I have now gone over the brochures etc. again and dared to make a new draft. I hope this time it won’t be torn apart in the air right away! Is this going in the right direction or should I just leave it and let the architect do all the work?

Regards and have a nice evening!

... please be so kind and add the checklist to post 1

You could have deleted your one sentence there as well.

And then ... these plans are not very conclusive. At least put in a few pieces of furniture.

Sleeping/dressing will be difficult to design, and the living area will not be easy either.

120 cm wide wardrobe with a door that opens inward ... what are you supposed to put there?

Unfortunately, there is no checklist ... building with a basement? How is the plot? Are the kids already there? Work/guest or something else? ... All questions one has. Oh, how nice it would be if there were a completed checklist.

Furnish the floor plan

An architect is drawing a house for you. But does it suit you?

Try drawing in your existing furniture or even better, the ones you want