Our floor plan design for an affordable house

Regarding draft #122:

Basically, I would narrow the hallway by a few centimeters and accordingly shift the staircase to the left side of the plan. However, it is not that simple structurally for it to hang on one side there and for a wall just to be placed above it (on the upper floor). A somewhat more expensive beam will have to be used for that. You will not necessarily have quiet at the workplace; I don’t mean noise or anything related to that here, but the restlessness of people going up and down there.
As I already said, I would start a wall there and partially continue it or take over the alignment so that you have a wall behind the sofa and can possibly separate this area at some point. Then, in the evening, you can also lounge there as a couple while others go to the disco or come home later.
I would move the utility room door into the hallway area and yes, separate it from the lounge area with a glass door.

Regarding the heating, I’ve already said that it will not stand on the wall.
I find the kitchen okay as is, maybe add a second window?!
I would make the window in the living room corner floor-to-ceiling, but I’m probably the only one here who thinks that.
How was the sand-lime brick on the upper floor? Be careful with the closet in the sewing room/dressing area. It would then be only about 160 with sand-lime brick of 160... (watch the raw construction dimensions, because then screed will be added everywhere and takes about 16 cm of height. In this room, perhaps place the sewing area under the window after all.
There is potential in the bathroom!
I see the yoga mat rather in the bedroom or dressing room... plan the seating area there, you can also retrofit a closet room if it gets too tight with the decoration stuff.

When I read this, I am very surprised how we managed to survive the first 18 years with children in a terraced house with a small hallway! What really bothered us was the lack of natural light in winter.

Experience is extremely helpful and should be considered. In individual cases, one can safely disregard some of it and do what one wants and can.

It's good that described vividly what can happen over the years with growing children. I found myself very well in that text. That is why we chose a very special architectural solution for living with young adult children.

The children of are still quite young. Planning an extension already now is a suitable idea, assuming a somewhat likely positive income and asset development.

I have seen with friends that such a project is feasible with significantly less room for maneuver. It was not easy, generated many hard working days, and required a lot of nerve strength, because work and a large family ran at the same time. Hardly anyone believed it would work – but it did, and in the end well. For me, that would not have been an option, but I am not the standard.

In the last floor plan, I noticed that you didn’t want your sewing room either in the bedroom or separate. Now it serves as both bedroom and separate.

To draft #122:

Since no one says it, I've been wondering all along if I've missed something, but the ground floor should be mirrored left/right, right? Isn't the sun on the left side, where the utility room is now taking the chocolate place?

Since no one is saying it, I keep wondering if I missed something, but the ground floor should be mirrored left/right, right? Isn't the sun on the left side of the plan, where the utility room now takes up the chocolate spot?

No, the house is rotated. The long side faces the garden and therefore south.

bright, large windows facing south/garden

The garden is only southwest - not south. Most of the sun comes from the left side - where the utility room is now.