ᐅ ETICS with concrete construction or exposed concrete?

Hello everyone,
since I haven’t made much progress in my other thread and @11ant has repeatedly suggested that I should please provide plans so something can be assessed here...
Well, now I’m finally sharing the plans – because we simply don’t know exactly what to do at this point.
Our project is explained in the thread
https://www.hausbau-forum.de/threads/hausbau-aus-beton-vs-Energieeinsparverordnung-2016.23880/
It is being built together with an architect in design phases 1-8.

I hope to get some input here now...
The main request is simply for an exposed concrete look on the interior load-bearing walls – since using concrete on the exterior is no longer an option.
Many thanks in advance to everyone who contributes ideas.

Exterior concrete is not an issue for this house... If your architect can’t manage that, I would consider finding another one.

It’s not about failing to achieve it, but rather about managing to comply with the energy saving regulation, which would require at least 60cm (24 inches) thick insulated concrete walls. As I have already explained, the problem here is the availability of specialists who can carry this out, as there are none locally, and secondly, the costs, which would be significantly higher in this case.

That’s nonsense, this is built as a sandwich panel, similar in structure to a brick-faced house, but just made of concrete. You don’t need specialists for that, and you get approximately a 40cm (16 inch) wall. It can also be thinner depending on the requirements.

Won't the hallway and entrance area be a bit dark? The bedroom window is just above ground level, so you could just make it a patio door. Do you really want the bedroom and bathroom right next to the terrace? I would move the living room and kitchen to the basement level, so you wouldn’t need the small kitchen down there anymore. Anyway, in the current design, your elevator should be closer to the small kitchen in the basement.

It seems like a typical architect-designed house. Visually interesting, but possibly difficult to live in...

Your house is less than twice as wide as the garage. I find the proportions problematic because then the garage becomes too prominent.

He also mentioned the sandwich method – we haven’t gone into detail yet since we have only had two appointments so far, so I want to gather some information here in advance.
Does that mean casting concrete on the outside and inside with insulation in between?