Floor plan holiday home Tuscany - 175 sqm on a moderate slope

I moved the house a bit. There is only a 10% slope. The access reduced by 50%. The house about 3 m higher up. In red alternatively the driveway without a 15% incline. Although in Tuscany 15% should not really be a problem. Or does it snow there as well?

Thank you for pointing out alternatives!

What is the area in front of the door used for?

What is the purpose of the area in front of the door?

That is a covered area in front of the front door and at the same time enlarges the space of the room above.

My boss has had a construction ruin at Lake Garda for 10 years, because building in Italy means dealing with bureaucratic arbitrariness and organized crime. His conclusion was: buy finished.

Well, something can always go wrong and there are always negative examples for every situation; but these are not the norm.
What truly concerns me are other thoughts, and I wonder if you should really build the house like this and now (if I may elaborate on my related thoughts).
Of course, I don’t know the background or all the deeper intentions, but I imagine some things to be difficult.
You probably won’t be there permanently during the construction phase and won’t see the house "grow," can’t intervene if something catches your attention or if you discover a personal misjudgment. You will have to make many small but possibly significant decisions by phone or mobile camera, which is inevitably risky. Building on site is already stressful and worrisome, but as an owner from a distance.
That would probably be the reason why I would rather buy, since apparently there is no rush.
In addition, you say in 15 years your life could/will be completely different when you really want to use your house. It will be a technically "old" house and all the finesse built in now will be long outdated when you move in.
And will you actually move in there? I hope so for you, but life sometimes takes strange turns and 15 years is a very long time during which many things can change positively or negatively.
If at all, then maybe a timeless classic like an old stone house or the like, but a "normal" house built in 2025 might no longer be to your taste in 2040, etc.

As I said, I don’t know your personal background and it’s not my business, but in fact, I’d rather rent something nice permanently or occasionally suitable for our purposes and then, if I really want to live there permanently or predominantly, build my "dream house" exactly as I need it or as it fits my situation then.

Regarding the floor plan, I thought that a "normal" floor plan for families probably doesn’t fit here, since your situation seems rather unusual. In this respect, I would tell my architect exactly what I want, such as a generous terrace/dining area for the family, perhaps more privacy in the individual rooms (possibly en-suite bathrooms), a separated sleeping area for me and my wife.
These certainly specific features of yours cannot be read from the floor plan.
I hope this shared train of thought does not bother you.

Of course, I do not know the background or all the deeper intentions, but I imagine some things to be difficult.

Well, anyone who treats themselves to a small villa as a holiday home just for fun (with the plan to expand it later, including a pool) should have the necessary cash to have the difficult things solved by professionals—

Well, anyone who just for fun indulges in a small villa as a holiday home (with the plan to later expand it including a pool) should have the necessary money to let professionals solve the difficult issues-

I know nothing about "just for fun" nor about the money, that sounds too casual to me, because we do not know the background. Almost all houses here are even built with highly praised German professional craftsmen, and the forum is full of grievances, so that has little to do with possibly available wealth. As I have read, those builders who carried out large and special construction projects here in the forum were mostly deeply involved in the construction themselves compared to those of the simpler houses, and some things you simply have to have seen, heard or felt yourself. As you yourself pointed out above, the architect’s performance so far has not exactly been commendable.