Plot is located in the southeast directly on the forest boundary
Do I have a visual impairment or is the forest in the southwest?
Guests sleeping per year: regularly 2 children (ages 6 and 9)
Do they then share a room once you have a child who lives with you permanently?
The floor plan is not bad overall, but I would probably also put up a more elongated house and place the children towards the southwest (forest?). Once you have furnished it, one can certainly say more. I’m curious how you want to use that small living room corner.
Regarding the current plan specifically: on the upper floor, the extra recess by the children’s room doors is wasted space. You could make the hallway smaller and the rooms larger. Then move the parents’ wall to the right to get an extra dressing room. The WC on the ground floor could also free up some space for a wardrobe. If there is no shower planned there, it could be smaller.
I also find the windows way too small. You don’t even live in the city with close neighbors. But post the new exterior views once you have them. If the children move towards the forest, they can at least get decent windows.