Tips for an almost finished building plan (2-story city villa)?

That's true. Even if the door to the garage is removed, the cloakroom is still there. But why should the door be a problem? I think it's great to be able to go directly from the car to the cloakroom when I come home in the evening, and not always have to go through the hallway from outside and then into the cloakroom. The girlfriend and the mop appreciate it :-) . And honestly. The cloakroom probably has enough space to store countless jackets and shoes. Or do you see it differently?

Honestly, I find the door unnecessary and the room quickly gets cluttered for 4 people.

Jackets, shoes, sports bag, diaper bag next to the school bag.

Groceries through the front door - one less door to open
The mailbox is closer to the front door
You also don't bring in that much dirt with the extra 3 steps

Focus on the kitchen, there's so much wasted space there, same with the bedroom

Simply make the house bigger.

The house is large enough in terms of exterior dimensions. Rather, in my opinion, many rooms are just poorly designed. Dressing room + master bedroom > 28m². In the 8m² dressing room, effectively 3.5 linear meters of wardrobe can be accommodated, window takes away wall space. Dead space in the bedroom. Pantry + kitchen almost 25m². However, in the pantry there is hardly any usable space due to poor design + window. Kitchen with large dead space. Guest room poorly designed, example wardrobe stands in front of the window, drawn example bed will probably be about ~1.6m long. And yet the passage is already incredibly narrow.

In our opinion, the room layout makes absolute sense. But that's where the topic of "ours" comes in. I think if I were to see your plan, I would also think that everything would have to be redesigned and it’s pointless. Everyone has a different idea of what a "perfect plan" is. But there probably never will be one, and if there is, it will probably only be for oneself.

No, that's not what it's about. That everyone has their own demands is clear. But a sensible room planning is independent of that. Many of your rooms waste square meters without being usable. The kitchen is one example. Those are planning mistakes. They are always wrong, no matter whose house it would be.

Sure, the 3 points that I’m not quite happy with yet could be easily solved. Simply make the house bigger. But then again, those are the additional costs, which of course should also stay within limits.

As it seems to me so far, I expect that the house could even be made smaller and still fulfill all your wishes + the 3 extra points. That would require some changes – of course. That’s what the others here mean by "everything has to be new." ;)

We were talking about the previously mentioned points and not that the plan is completely useless (from some people’s point of view). I’d be interested in seeing your plan, how a "perfect" layout looks here?!

Well, perfect rarely if ever exists.
But take a look here, this one is pretty good:

There are also examples for smaller houses. But you can browse the forum yourself. :)

I will still do the questionnaire when I have time.

That would be a good start. Your basic idea is not bad and some of it can be retained. You can see what you want. Only a few mistakes need to be fixed. ;)

Many points would bother me as well. To name just a few:

Cloakroom with the bottleneck "door" to the hallway. If several guests leave at the same time, one of them already blocks the door and everyone else has to wait. I don't find that inviting. But if you absolutely want to stick to the room and even with two doors, at least move the door to the garage so that something useful can still be placed along the outer wall. Also consider whether a seating area might be useful somewhere in that area.

The dining area would be too narrow for me at about 3.2 m for a table with two rows of chairs. I think you have to calculate about 70 cm of space per chair including space to pull back from the table. That multiplied by 2 plus 1 m table leaves around 0.8 m of free space. So about 0.4 m behind each row of chairs. Besides, I would worry that the entire room at a length of about 11.5 m would look shapeless/awkward due to the narrow width.

The kitchen shows that the pantry was simply added later. If you moved the dividing wall to the hallway further to the right, this wouldn't change the furnishing options much—but it would make it obvious that there is practically about 20 sqm of hallway on the ground floor. That's more space than the dining area has. I assume the kitchen isn’t planned yet? At least the free spaces between the lines suggest so...

You can’t put a double bed in the guest room. If I had to sleep on the single bed right next to the door, I would find it very uncomfortable. The passage between the bed and the corner of the wall would probably be too narrow if there were actually cabinets along the entire length. At least from the desk you have it convenient, you can grab folders directly from the cabinet since the distance between desk and cabinet is so small. Provided you can still open the door fully past the chair.

In the dressing room, you can already see that you can’t place cabinets up to the window. At about 1.5 m width, I would recommend sliding doors, otherwise you’d always have to sneak around open doors.

Unfortunately (!), I don't have a reasonable small approach for the upper floor, meaning how you could improve it with few means. In my opinion, you would have to completely rethink everything, which you probably don't like to hear. ;-)

On the ground floor, I would consider making the offset between living and dining smaller or using sliding doors between dining and living. And completely eliminate the cloakroom as it is.

I sketched it a bit, the kitchen would go off the page and could have a nice large island like this.

The house is large enough in its external dimensions.
Rather, in my opinion, many rooms are just poorly designed. Dressing room + parents’ bedroom > 28m². In the 8m² dressing room, effectively 3.5 linear meters of wardrobe can be accommodated, the window takes away wall space. Dead space in the bedroom.
Pantry + kitchen almost 25m². However, there is hardly any usable space in the pantry because it is not optimally designed + window. Kitchen with large dead space.
Guest room poorly designed, an example wardrobe stands in front of the window, the example bed drawn in will probably be about ~1.6m long somehow. And yet the passage is unimaginably narrow there.

Here it is summarized what the problem is. I am also convinced that you could build at least 20sqm smaller with more efficiency.
I once marked the unnecessary sqm with my fat finger. Surely the house should be spacious, but here the cost drivers are hidden. The dressing room speaks for itself...