L-shaped floor plan - What is your opinion?

If the plot is 20m wide: 3m boundary distance to the north, house as a rectangle with a width of e.g. 9m still leaves 8m towards the southwest for terrace and garden.

Have you ever experimented with the sun's path? Our terrace faces exactly west and from 12 o'clock (winter time) onwards it is almost completely in the sun.

It would be the same with us. From noon onwards, the west side also gets sun. 9m is way too narrow. You would probably make use of the 14m (20m width minus 2x3m to the boundary) and then about 10m the other dimension. That would fit better with the already narrow plot. It would just be a 'standard solution' that we have certainly considered, but so far found the L shape more appealing... Do you have a concrete floor plan idea in rectangular form?

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

If you have the perfect floor plan, feel free to share it. At the moment, you haven't even answered my question about where you would place the wardrobe instead... That doesn't help...

9m are way too narrow

Why? It was just an example anyway. 10m or so would still be okay. Especially since apparently nothing is built directly on the neighboring property to the south.

At the moment you haven't even answered my question about where you would place the wardrobe instead...
That doesn't help...

Wow, that's already cheeky. You don't answer the questions and at the same time complain that your questions are not being answered. On top of that, you constantly want complete floor plans from others but provide your information yourself - if at all - only in dribs and drabs, see easement etc.

One last time: Your floor plan in #1 is about 185m2 = about 400k. If it were a rectangle. Plus double garage = 25k, plus ancillary building costs = about 40-50k, plus two roof terraces = about 20k, plus all the corners, edges, projections, recesses, etc... without further special requests.
Do you already own the land? Are you doing any work yourselves?

I would therefore estimate very roughly a minimum of 500k euros, without the land, without extras.
Can you easily afford that? Plus 10% buffer? So 550k?

If all that is no problem, then great. Carry on. But for once just say that!!