I would recommend a larger bedroom or at least a dressing/closet area. 15 sqm is quite tight with a wardrobe. I really like the modern style and we will also build in a modern design. A friend, a former interior architect, always hammered into my head that I should think first and consistently about the function and appeal of the floor plan. The exterior shell comes at the very end. There are then many possibilities to give each floor plan a stylish exterior. That is exactly how we are doing it again now. Our floor plan will be built exactly according to our needs and wishes (for the most part). Since there is a desire for spaciousness on the ground floor, it might be possible to completely outsource the utility room, just like the sauna on the upper floor. A sauna in the garden is great to implement, cheaper, spacious, without problems due to moisture etc., and does not take up space in the house. It is a big house, but so far it still feels cramped. Our ground floor area will be almost identical, but with an open space above and a straight staircase along the wall. Here I would feel it is cramped, even in the entrance area. A nice garden is great but I would never limit the house to have more garden. A few more sqm of living space on the ground floor pay off much more over the years than a few more sqm of garden. The large window areas are great, we had it that way and want it again. It feels like living outdoors. Very nice!