I'll put the bag of chips away...
The facade facing east really looked like sh...e anyway, sorry. More like the barracks we had here for the refugees after World War II. A little window for every tiny room...
Put in one large sliding door into the dining/living area instead of the two windows. Maybe also treat yourself to a patio door in the bedroom (yes, there’s something to that, being able to step outside into the sun after getting up). Also give your two children access to the garden through patio doors and extend the terrace around the house—not too wide, but so that you can easily step outside from the east side too. The child on the west side should also get a small paved area right outside their patio door. The kids will love it. And don’t come to me with "I don’t want the kids to just go outside whenever they want." Your house will not help with discipline—it’s not a prison. A child can easily get out over a 40cm low parapet—and they will do it, believe me.
We also have fixed glazing: behind the kitchen unit, the double casement window in the bathroom (where I also have a row of windows that I can fully open), and a high window in the living room. All windows are complemented by large, openable windows, patio doors, or sliding doors and can be cleaned well from the outside. But that doesn’t make sense here in your case.
Your wife wants a closed kitchen—which you might not understand, but that's just how it is. What does not work and makes no sense at all is this dance hall of a kitchen—you can afford that in 180 sqm, but unfortunately not in 130 sqm. The lady will have to swallow that bitter pill.
Halve the kitchen and add the gained space to the utility room or to the west also as storage/pantry—because there is a massive lack of storage in this plan: storage, hello? There are four of you!!! No basement, a tiny utility room, and nothing else. Also not enough space to, like Nordlys, make a fixed staircase to the attic and use the storage space there. They could have that now, by the way, from the utility room enlarged by half of the kitchen. Then put a space-saving staircase upstairs, and the storage problem is solved.
Instead of a second full dining area in the kitchen, with the “halved” kitchen you make two parallel kitchen units (meaning the kitchen has to be about 65+65+110=240 cm wide; the shell dimension accordingly larger), and in one of the kitchen units you leave out two base cabinets and push two chairs under there. That’s enough for a quick breakfast and to sit the kids down for lunch, and it won’t take up more space. The whole family eats together at the “real” dining table anyway. Otherwise, the space can be used as work surface in the kitchen. You don’t have a palace, so it has to be planned so that the space is optimally used. A second full dining area in only 130 sqm is just nonsense.
With an enlarged utility room, maybe also a niche for a proper cloakroom can be created; that would also solve that problem.
Overall the kitchen—so far only a half-baked plan has been presented. Do you know what you want? Which fridge? With freezer compartment or (now with the newly gained storage space that would also be possible) a separate freezer in the pantry accessible from the kitchen. There are four of you—experience shows that almost every fridge is too small; the version without a freezer compartment has its appeal. But then you do need the freezer nearby. I wouldn’t want to live without a freezer with a family of four. A side-by-side fridge will probably be out of the question given the available space, but whether you want or have to integrate a freezer in the kitchen unit or the freezer can stand somewhere else is something to consider.
Which appliances? Dishwasher? Microwave? Oven maybe placed higher? Oven/stove combo, as traditionally done with oven under the hob, or rather oven at chest height and separate hob? That should be roughly planned now, important for the connections. Likewise the sink—where should it be? That’s where the water connection has to go! Planning that right and placing the connections accordingly now saves a lot of trouble and complaints later. Even with the smaller kitchen, I would want direct access to the garden—how is the patio door to be integrated and how big will it actually be? It would be stupid if you plan a large door now and then find out at the kitchen studio that a door 20cm narrower would have allowed much more kitchen possibilities. Just as an example.
The consideration of where I put my exercise bike may come in the last planning steps—but before that, I planned the kitchen, know where I store my stuff, where people put their coats, jackets, shoes when they enter the house, etc.
All of that is still missing here.
You allegedly have a friendly architect? Is he experienced? And he hasn’t stepped on your toes yet???