Single-family house on a south slope, floor plan approx. 160m² - with basement and garage

Hello everyone, attached I would like to show you a first draft from the architect with the request for feedback and opinions.

Bebauungsplan/Einschränkungen
Size of the plot: 870m²
Slope: south-facing slope,
Floor area ratio: 0.4
Floor space index: 0.8
Knee wall height: max. 0.75m
Building window, building line and boundary
Edge development
Number of parking spaces: 2 + 2 in front
Number of floors: 2
Roof shape: gable roof
Style:
Orientation: garden facing south
Maximum heights/limitations
Further specifications

Anforderungen der Bauherren
Style: classic,
Solid wooden house with wooden cladding on the upper floor
Roof shape: gable roof with approx. 34°, open roof slope, no attic!
Building type
Basement: with cellar
Floors: 1.5
Number of people: 2 adults (38,39) + 1 child (2) + possibly another child
Space requirements in ground floor, upper floor, cellar:
The upper floor is the family’s retreat, the two children’s rooms could optionally be combined if there is only one child. Master bedroom and bathroom do not have to be particularly large.
On the ground floor an office (self-employment) is very important. The focus is on the kitchen and dining area with the view on the south-facing slope. The living room should be somewhat separated but does not have to be a separate room. The stairwell should be open as heating will mainly be done with the stove. Cooking is done regularly.
The basement should represent a second residential unit initially for KFW 55 subsidies. This is the guest area and a large gym.
Office: yes
Guests per year: 20. Family do not live on site and visit often
Open architecture
Conservative construction style
Open kitchen, cooking island: yes
Number of dining seats: 6-8
Fireplace: yes. Masonry wood stove
Music/stereo wall: no
Balcony, roof terrace: terrace in the west
Garage: double garage

Further wishes/special features/daily routine, also reasons why this or that should or should not be included

Hausentwurf
Who created the design:
- Architect
What do you particularly like? Why?
We like the upper floor very much.
Open living/dining area with large window front facing the garden as it is not overlooked.
The basement offers enough space for technology and storage.
Cellar under garage with space for garden tools and workbench.
South roof well suited for photovoltaics

What do you not like? Why?
Cost estimate according to architect/planner: 450,000,-
Personal price limit for the house, including equipment: 550,000,- (all furniture is present except bathroom and kitchen). A lot of own work planned in interior finishing.
Preferred heating technology: water-bearing masonry stove, buffer tank with heating rod, large photovoltaics, wall heating

If you had to do without certain details/extensions
- you could do without: open space, bathtub
- you cannot do without: office, garage, cellar

Why did the design turn out as it is now? e.g.
Which requests were implemented by the architect? Yes
The challenge lies in the ecological and sustainable wooden construction and the budget.
What makes it particularly good or bad in your eyes?

What is the most important/basic question about the floor plan summarized in 130 characters?
Is the living area sufficient? Does the floor plan work in everyday life?
Does the staircase fit? Is the hallway/entrance area large enough?
What do you think about the windows in general?
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I cannot really come to terms with the draft. I can understand the location of the study right by the entrance, the size is still acceptable, but the daylight planning is poor. Considering the almost wastefully unused areas in the "open space" and basement, it gives a very disharmonious impression. The opportunities to integrate the direct garden access in the basement into daily life remain unused. The basement room is labyrinthine and difficult to access - too much passage. I really like galleries. Here I see the wish implemented, but I cannot imagine it contributing to a good living atmosphere with this arrangement - on what occasion would one want to enjoy this air space in this place? Instead of desperately trying to fit all wishes into one floor plan and none very well, I would let go of one or the other aspect and implement the most important wishes really well.

The basement is detached from the living levels... Am I correct in understanding that the best-located rooms facing the garden are thus only placeholder rooms? I don't think that is well designed, nor do I like the hallway in the basement. The area between the kitchen and the terrace seems too long to me to get "into the garden." Ultimately, it is "just" a captain's house with a basement tucked in due to the slope. Otherwise, one can live with it if that is the intention.

Meets your requirements: "Classic, Solid wooden house with wooden cladding on the upper floor Roof shape: Gable roof with approx. 34°, open roof slope, no attic! Building type Basement: with basement Floors: 1.5" What can you say? Wooden cladding implemented better than desired.

I can't really come to terms with the draft. I can understand the location of the study room right by the entrance, the size is still acceptable, but the daylight planning is poor. Considering the almost wastefully unused spaces in the "all-purpose room" and basement, this gives a very disharmonious impression. The chances to integrate direct garden access in the basement into daily life remain unused. The cellar room is labyrinthine and hard to reach – too much passage. I really like galleries. Here I see the wish implemented, but I cannot imagine it contributing to a good living feeling with this arrangement – on what occasion would one want to enjoy this airspace at this point? Instead of desperately trying to fit all wishes into one floor plan, none of which is really good, I would detach from one or the other aspect and implement the most important wishes really well.

Good morning and thank you for the quick feedback. The daylight planning in the office has also caught our attention. That could be solved with a larger window, or where do you see this room? What is the all-purpose room for you? So where are spaces being wasted? We have also discussed the garden access topic at length. We believe that one can easily get down via the terrace in the west with the right stairs in the terrain. Cellar room and building services will be swapped. The gallery is primarily meant to get the warmth of the stove upwards.

The basement is detached from the living levels... Am I right in seeing that the best located rooms facing the garden are therefore just placeholder rooms? I don't think that's well done, nor the corridor in the basement. The area between the kitchen and terrace seems too long to me to "get into the garden." Ultimately, it's "just" a captain's house with a basement tucked in due to the slope. Otherwise, one can live with it if that's the intention.

In the basement is the frequently used guest area and a very often used sports/yoga room. Both are very important rooms for us. What do you mean by a captain's house? Best regards