Please provide opinions on the old building floor plan

I can't imagine that. Want to quickly wash my hands after coming home and not disturb the child while showering or something.

A habitual situation that you simply don't have when you talk to each other and belong to a family. As if the child/teenager, whoever it is, is always in the shower at the same "impossible" time when mom comes home. And yes: I also wash my hands first, but oddly enough in the kitchen, although the bathroom is at the entrance ;)

I also don't like it when guests have to share the bathroom with the kids.

I can understand that: kids aren't exactly the tidiest either ;)

The hallway only extends up to basically right behind the living room door, then comes the outdoor area or currently the conservatory.

That's a great room! Basically a living hallway.

That was my thought too. But my husband resists having a bedroom on the ground floor.

Are those his kids? That's a serious question: he doesn't want to, the kids have to... The burglar will get the ones sleeping on the ground floor first :P ... noise from the living room bothers the next ones, etc.

Regarding the kitchen: it will be fine.

However, I would basically always consider whether it might be more sensible to leave a half wall standing, put up a wall across (e.g. wardrobe), or enlarge the door openings and then leave out the door leaf. It doesn’t have to be all set to existing walls.

For example, I would paint the vestibule. Remove the door. Possibly place a wardrobe cabinet in the middle, remove the living room door, etc.

For the bathroom upstairs, you would need to see how the drain on the ground floor can run outside.

Otherwise: the completed questionnaire is missing.

Are those his children? That’s a serious question: he doesn’t want to, children have to...
The burglar first gets those who sleep on the ground floor :p ... noise from the living room disturbs the next ones, etc.

Honestly, I don’t know what his problem with it is... But since it can be arranged this way too, I don’t want to argue about it, there will be enough other things...

However, I would generally always consider whether it might be more sensible to leave half a wall standing, to set a wall across (e.g. a cloakroom) or to enlarge the door openings and then omit the door leaf.
It doesn’t have to be all attached to existing walls.

Unfortunately, I don’t understand how that is meant.

For example, I would paint the vestibule.

I have already considered that since it’s not really big. But it is important to me so that the cats do not run away as soon as the front door is opened. Also, the parcel delivery person doesn’t have to immediately look straight across the house onto the terrace.

the completed questionnaire is missing.

I thought about it, but since it’s not a house being newly planned, I thought it doesn’t make sense. Of course, I can provide it afterwards if you want it. But only from the PC tomorrow.

Oh yes, I’m attaching an exterior view from the garden. We haven’t taken any other photos ourselves. We don’t yet know about the conservatory, whether we want to keep it.

Very nice. Even just the garden wall :)
I would keep the conservatory, it's heated, right?

I unfortunately don't understand how it is meant.

For example, I wouldn't just tear down the kitchen door, but also the walls around it, as far as possible. Softer transition...
Or leave half a wall standing in the kitchen, at least up to 160 cm in height, and then place the stove and refrigerator in front of it.
What is between the hallway and the conservatory? Glass? You could put a wall in the hallway parallel/crosswise for a coat closet. For example, at the shown coat rack on the right side of the plan, a more vertical wall for the coat closet or a horizontally centered wall in the plan. Like in a gym locker room. I don't know if that suits you. You can also build half-height walls for a hallway cabinet. I would just experiment with that.

I can't imagine that

Of course, it's difficult to anticipate your wishes and preferences here. That's why I don't really like such "floor plan discussions." But I think many people sometimes approach their planning too dogmatically. You build what you know and unfortunately often do so without questioning yourself.

The thing with the guest toilet, for example. We have realized for ourselves that we don't have "guests" but family and friends who have already visited us in our student apartment and even used our own bathroom. These are people close to us—what would we have to hide from them in the bathroom? They could even discover the dildo collection in the dishwasher ;-)

Especially with a "children's bathroom" up for consideration, I am at a loss with my understanding. Do you really want to finance a separate bathroom for the few years of potentially endangered privacy (doors can be locked) between "growing up" and moving out?

We at least would not have been willing to spend a significant amount on such gimmicks, just to give "guests" in our luxury hut a backyard pub feeling as soon as they need sanitary facilities (even that eternally tilted window right next to the front door with "exhaust noises" from people and machines would have been a no-go for us).

I imagine extending the roof would be expensive and then you no longer have the nice window front

I would argue that it wouldn't be significantly more expensive than renovating the balcony. Regarding windows, there are also roof windows, including very large ones. If desired, even with a fold-out balcony.

But again here: Just ask yourself. Am I willing to shell out a few thousand euros for 20 minutes of usage per year? It is usually easy to come up with usage possibilities for such conditions. But would your husband have wanted to put a balcony in front of the bathroom in a new build? I don't think so.

Edit: Just saw the photo. That's only about ~1.5m of roof and a wall, which can then again get windows.

Despite the huge plank, we lack space for a wardrobe. I see space on the wall towards the planned children's room, then the wardrobe would only stand sideways in front of the window, in that case sliding door (sliding element on the living room side). Since we want to replace it anyway, maybe a bit of walling up is possible?

I wouldn't wall up anything there.
What is the view from the entrance towards the conservatory like? I imagine it to be somewhat special, in a positive way. So something for the wardrobe that matches the value of the room.

In the kitchen it will be difficult to impossible to have wall cabinets because of the 3 windows,

Nobody has wall cabinets anymore, my stepdaughter taught me that ;)

The garden view is great. If the balcony is enclosed, leave it.
About the planned bathroom upstairs: probably not possible with the existing plumbing. I would use the planned bathroom as an office. As a walkthrough room.
Bathroom where it is.

I would leave the conservatory, it's heated, right?

It was added later as a sort of greenhouse and I believe it’s not heated. If we want to insulate the facade, it probably won’t fit afterwards either. The area was definitely an outdoor space at some point.

What is between the hallway and the conservatory? Glass?

Exactly, that side is a complete glass front.

The thing with the guest toilet, for example.

I only know living spaces with guest toilets, so I’m probably biased in that direction. Thanks to controlled residential ventilation, the window would hopefully never be tilted. At least that’s how it is at our home. Since the connections are already there, I think the costs for this bathroom are minimal considering the total costs.

I would claim that it won’t be much more expensive than renovating the balcony.

Thanks for the hint, we will definitely take a very close look at this area regarding tightness and damage.

What is the view from the entrance towards the conservatory?

You look straight through into the garden. I also think that blocking the view would not be good for the house.

You don’t have wall cabinets anymore anyway.

Pull-outs below are definitely practical for most things. I can hardly imagine them for glasses... They fall over every time the drawer is opened or closed, right?

Regarding the intended bathroom upstairs: it probably doesn’t work well with the existing pipes. I would use the intended bathroom as an office. As a pass-through room. Bathroom where it is.

That’s a good idea too, thanks! Regarding the wardrobe, I also noticed that you can use the area “inside” the stairs, which is already used as a wardrobe now, and the wall next to the kitchen door, which should also offer space for a cabinet.