L-shaped floor plan - What is your opinion?

I would change everything. For example, take a look at Schwörerhaus for bungalows. They have some with converted attics. Also an angled bungalow

We have done that repeatedly. The floor plan always has to fit the property... And that's where it starts to get difficult!

No, you are thinking too complicated. Untie your knot. Your property is not difficult.

I would find it a shame to place the garage in the southeast and thereby take away a piece of the garden, while there is a strip in the north that is probably not used anyway. How about placing the house more centrally on the plot? Is there a building envelope?

If you actually like the ground floor as it is, I would swap the dressing room and the bedroom, reduce the size of the bathroom a bit (then rotate the bathtub and place it at the top wall next to the shower, toilet on the right side). The advantage that you don't disturb each other when getting up anyway doesn't really exist, and is probably rarely necessary. If you sleep in longer on the weekend, your husband probably won’t have to or want to jump in the shower immediately, but rather take a coffee quietly. Then he can sneak from the bedroom through the dressing room to the guest bathroom for a toilet visit. That would be the case for us or, actually, it’s the exact opposite for us. No idea how it is with you. So just an idea.

I would find it a pity to place the garage in the southeast and thereby take away a piece of garden, while in the north there is a strip that is probably not used anyway. How about placing the house more centrally on the plot? Is there a building window?

The plot is between south and north restricted. Only 3m to the boundary on each side. I still have to say something about the north: there is a right of way there. 3m from the property boundary, meaning this strip may not be built on. Sorry, forgot to write that in the EP. Or did you mean to position the house better between east and west?

Regarding the question about the rectangle: a house in rectangular shape is probably the simplest and cheapest. But you would probably plan it at full width, i.e. 3m distance to the south and north. Then we would only have the west orientation for the garden. Sure, that would also be fine. But with the L-shape you have the southwest orientation... This is how the shape came about, through the wish to be able to use some of the south.

If you actually like the ground floor that much, I would swap the dressing room and the bedroom, reduce the size of the bathroom a bit (then turn the bathtub and place it at the top wall next to the shower, WC on the right side). You don’t really have the advantage of not disturbing each other when getting up anyway, and it’s probably rarely necessary. If you sleep longer on the weekend, your husband probably won’t need or want to go straight into the shower, but rather have a coffee in peace first. Then he can sneak from the bedroom through the dressing room to the guest toilet. That would be the case for us, or rather the exact opposite is the case for us. No idea how it is for you. So just an idea

Also a good idea! Swapping the bedroom and dressing room would at least solve the problem of having the bedroom directly facing the open living area...