Offer single-family house, 2 full floors, basement + 1 floor, what do you think?

I would still work a lot on the floor plan! Especially the living room is very small and also very close to the TV. Have you measured how far you are currently sitting in front of the TV so that you understand how much 3.5m is. How do you get in through the fixed glass element?

so our living room was 3.5*5.5 and we had a 2.7x2.7 sofa and a 0.9x1.60 dining table in there and we also had a wardrobe and 2 chests of drawers. it was not cramped and definitely easy to furnish. of course, bigger is always nicer ;)

I strongly doubt that, we have similar dimensions in the apartment, especially regarding the distance from the couch to the TV....so I find it anything but cozy. It's also about these 3.5m. You can already see on the floor plan how cramped everything is.

I would still work a lot on the floor plan! Especially the living room is very small and also very close to the TV. Have you measured how far you are sitting in front of the TV now so that you understand how much 3.5m is.
How do you get in there through the fixed glass element?

You don't have to justify yourself here. It's your business how big the living room should be.

But I swear on my life.... As soon as the summer season starts and from that point on you want to eat breakfast, lunch, and dinner on the terrace, you will get sick from all the going up and down. I saw it with our neighbors. You can't sugarcoat it anymore then.

But as I said, it's your choice.

So that you understand. Your position "earthworks" is not about removing surplus soil. To make it even clearer. Transport and disposal are not included without having read your offer €.

So, I have clarified it - earthworks including all transports and storage are included in the price

Storage is not disposal. When will you pick up the soil again?

Storage does not cost 2€ per cbm