Single-family house - approx. 150 sqm - without basement - Who has ideas? Thanks

Oh ... that's unnecessary. But if you have 4 kids and they all have to go to school, then it's relaxing to have 2 showers on the floor and you don't have to go downstairs with your clothes. That happens x times more often than kids taking off their clothes right at the front door (glass elements) and having to shower there immediately. They can also go up the stairs naked ... shower there and are close to fresh clothes.

Regarding the new draft:

Ground floor:
- The PC corner is initially only temporary, it doesn't have to be separated downstairs, it can be flush with the living room, a small corner is enough, if necessary I will take one room upstairs, which is intended for the 4th child

Well, how you arrange the rooms is up to you.

- maybe the guest toilet can be made smaller, since there is no guest room downstairs anymore.
Upper floor:
- shower/toilet can be completely removed, one bathroom is enough, if necessary one has to go down to the guest toilet

I refuse to plan only one bathroom for a family of six. Your architect can do that.

- what do you mean by the backup kitchen, storage for food? Can't you fit that in a large kitchen? Basically, we store little anyway, even though there are 5 of us, or you make that room smaller and only one door from the hallway?

Yes, that is storage room, cleaning room, dishwashing room, temporary storage room - a place to quickly put aside trash - basically a universal kitchen helper room.

Utility room and technical room, is there another alternative in terms of space?

I don't know what you mean.

I also thought that only a guest toilet without a shower could fit downstairs. But not if the small bathroom upstairs is to be removed. That's why I left both in. Otherwise, the space downstairs can still be used well for shoe cabinets.

If the PC corner flies away, all the technology could go there. Then the utility room would have a nice size.

this one is very compact, not a bulky piece and can peacefully stand somewhere on a dresser

And where will this dresser be? In the living room? Next to the TV?

- With the folders, it’s still manageable, there’s still a bit of storage space in the dining area.

Then the existing folders in the dining area, those that come after the construction, then in the utility room? It’s a jumble... my grandmother would say now: like with the Hottentots

I also thought that only a guest WC without a shower could fit downstairs. But not if the small bathroom upstairs is to be removed. That's why I left both in. Otherwise, the space downstairs can still be used well for shoe cabinets.

yes, is a good idea ....

I refuse to plan only one bathroom for a 6-person family. Your architect can do that.

I think you misunderstood, there should be 2 shower options

Yes, that is storage room, cleaning room, rinsing room, clearing-away room - quickly putting trash aside room - in short a universal kitchen helper room.

couldn't this room be combined with the utility room?