Single-family house on a slope with a basement for 2 people including home office and hobby rooms

Hello to you all and many thanks for the responses. I have roughly sketched the house including the garage and terrace into the site plan. Orientation now corresponds to that of a normal map. South is at the bottom. I think this makes things a lot easier and already answers some questions. See attachment. I have tried to answer all questions comprehensively:

1) That the office might be too small, I had already feared. Thanks for the hint. I need to discuss whether we relocate the hobby room to the basement and make the office and bedroom a bit larger.

2) My wife does not want access from the dressing room to the bathroom. We currently have it so that one has to go through the bedroom and it has not bothered me so far, but I will bring it up tonight. I had the dressing room on the other side first, but then the bedroom is too narrow for the bed.

3) I would very much like the laundry room upstairs, because currently washing always fails due to the need to go to the basement, and I value efficiency regarding household chores.

4) Regarding the soundproofing: that’s a good point! I will discuss with my partner whether we can put a door somewhere.

5) I didn’t quite understand about the guest bathroom. Yes, I specifically integrated a normal shower in the guest bathroom so that it is a full bathroom. We don’t want guests to use our main bathroom. How overnight visitors will be handled in the future is uncertain. We have family abroad who come by from time to time. Also friends from other parts of Germany. Currently, the family stays a few places away with the grandparents, but as they are very old and the house will certainly no longer be available after their passing, overnight visits to us will likely increase. Currently, we have office, guest room, and cat room all in one space. That is terrible. The cats should have their sleeping place with all the trimmings in the basement in the future with a connection via a cat flap to the garden. I would like a guest room that is "ready to use"; right now it always means two hours of tidying, rearranging, and cleaning to turn the half-cat, half-office room into a space where guests can sleep. Therefore, I do not want to do without a pure small guest room.

6) Windows on the upper floor: actually, I have left out the windows in the hobby rooms because I didn’t yet know where to put them. I have not yet drawn roof windows either. I definitely do not want a basement feel. On the contrary, I love it bright.

7) In the living room, I also had concerns that it might be too dark but do not know where else I could put more windows so that furniture can still fit. The lack of south orientation results from the desired connection to the garden and terrace. We definitely want the couch on a wall. At first, it was free in the room and we felt very uncomfortable sitting with it until we rearranged it.

8) The sports room is supposed to become a bouldering room, and we find the narrow shape quite interesting. Generally, the room can be a bit quirky.

9) Bedroom size: I thought 1 meter on each side next to the bed would be enough if you have a dressing room, since you only sleep in the bedroom. How big do you think the bedroom should be?

11) The basement is not included in the floor plans.

I forgot to answer one more question: we spend time at the dining table between 12 and half past 1, and then from 4:30 until the evening. Unless we have visitors, then also in the morning.

Sports room is supposed to become a bouldering room

What is that?

I find your guest room quite justified. You shouldn't really object to a shower either.
However, I wonder if the basement even has its justification. It reads as if it is only for the cats, since the laundry is done upstairs.
Also, don't take it the wrong way, but to me it all looks too much like playrooms are planned upstairs, and the common rooms have to yield to that.

Bedroom size: I thought 1 meter on each side next to the bed would be enough if you have a dressing room, since you only sleep in the bedroom. How big do you think the bedroom should be?

Well, you are planning a house over 200 sqm, but the bedroom is a small room.

Depending on the slope, I would consider whether you should take a different approach: basement with cellar room and open south area including exit and terrace, then the rest on the ground floor with access to the main garden, e.g. office and playroom on the ground floor, living area in the basement. The cat will also have space somewhere if you plan it correctly.
Hillside properties always belong in the hands of experienced architects.

What is a cat room needed for? I had up to five of my own. I only used a separate room for animal protection foster cats.

In the ground floor, the path kitchen - dining - terrace bothers me.

I would completely redesign the upper floor. Too winding, too small in places.

See if you can find the floor plan from . It should roughly have the same room program.

Bouldering is climbing without a rope.
Do you really want to have that in the house? Who keeps moving things around all the time?
I would really put that up in the attic, there you basically get the overhangs "for free". Chimney climbing isn't really a classic in bouldering... And if you eventually outgrow the boulder (it happens), then you have a room that wouldn’t be usable otherwise. I would think about that...

So we want a utility basement. The cats should also sleep there at night because otherwise they wake me up. That is what is meant by "cat room". We definitely want a basement. We only have one basement room here and it is terrible. We work a lot in the garden, need appropriate equipment which must be stored there, bicycles, possibly a fitness room, overnight room for the cats, and the main office should be in the basement. If possible, there would be space for the 2nd hobby room upstairs, so that things could be spread out upstairs. The terrace should definitely face the back. Due to the slope, you sit at the back in greenery, completely private because of lower neighboring properties with bungalows. A spacious garden is very important to us, so we searched for a plot with at least 1000sqm and connection to meadows for a long time.

It is true that the room is hard to use if it is no longer used for bouldering due to its layout. I actually drew it last because the shape itself doesn’t matter at all. Since we have been doing the sport daily for 10 years, we only had the choice between finding a plot near a gym or taking a cheap plot and sacrificing 15sqm for the bouldering room. Since my wife loves setting routes passionately, this should not be a problem. I will take another look at the upper floor and change it. Thanks for the suggestions. The house should only have about 180 sqm if you consider the walls, etc. I would also like to build it smaller because it is cheaper, but then I don’t think our wishes can be realized anymore.