I have also thought about relocating the kitchen - to where the guest WC is currently planned. The connections would also be there. The bedroom would then be where the kitchen is now and possibly swap with the 3rd room (if that is not a load-bearing wall between the kitchen and the 3rd room) - so a larger bedroom directly next to the bathroom and the 3rd room adjacent to it. Currently, there is no child yet, right? This way, there would be some distance from the living area - I always find that quite pleasant. And as the "icing on the cake," the living/cooking/dining area would really be connected. Connections for the kitchen are where the guest WC is planned now, so it should not be difficult to simply plan the stove and sink there (possibly on an island?) and the dining and living areas would have access to both roof terraces.