I rummaged a bit through my "floor plan templates" for some inspiration. The examples are really meant to be just suggestions. I rotated and mirrored all examples as I would basically orient them on your property. Garages, which are partially visible, just ignore for now. Also please ignore the north arrows.
Dormers could probably still be planned ;)
Examples 1 and 3 are clearly rectangular .. given the width of your property, that could actually be used quite well.
Your current site plan with the current draft:
Example 1 - approx. 150 sqm - window seat on the upper floor in the hallway, where there is currently a closet drawn without a window. For this reason, possibly no hallway window at the top of the plan, but storage instead. The technical room on the ground floor is very small here; the washing machine is planned on the upper floor in front of the bathroom, together with storage.
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Example 2 - approx. 150 sqm .. was once an adapted example of another draft here in the forum. Had a knee wall, but of course conceivable with 2 sloping roofs, window seat facing south on the upper floor instead of closet storage.
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Example 3 - 160 sqm, no real space for a window seat
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