Constructive criticism is always welcome, but with statements like "a 110m² house is not a life project but a temporary solution," I unfortunately can't do much.
That is a shame. A temporary house is a fine thing. The note that it only needs to be "kept" until, for example, the children have finished school, should have a relaxing effect. It does not have to be perfect; in rarely more than a dozen years one will change the property. That at least somewhat puts a very specific fireplace design into perspective, and even very much reconciles one with a project-typical tile selection.
To summarize: we are talking about an end terrace house on a shared utility underground garage. The drawings presumably come from the sales advisor and will receive their dimensioning and window layout only at a later stage. I assume the system also provides the heat supply, and the chimney in the house is only for an additional fireplace. What national building regulation framework we are dealing with here at all, you remain silent about – I suspected Austria, but so far have neither read a confirmation nor a correction. Furthermore, there is a subsidy-relevant limit of 110 sqm of living area, about whose commitment period as well as the standard according to which it is measured, nothing has been said; how the related discipline goes together with two unnecessary balconies escapes my understanding. The living area is supposed to be felt spacious by open construction on the one hand; on the other hand, there is a wall around the little room for the TV sofa called the living room. Storage space is completely excluded from the discussion here; apart from a relatively large wardrobe room within this framework, no storage room is recognizable. As a discussion framework, here virtually everything within the outer walls is presented. That I question this as at least highly atypical for such projects, you have probably overlooked or misunderstood. I expect that your sales advisor will answer you later that no, the freedoms were not quite as extensive as currently laid out.
It also helps to get living inspiration from other countries,
The OP is already doing that, here in a German forum ;-)
Yes, we have very similar measurements.
If you are interested, I can link you our floor plan, @ruebe87?
That would be ambitious to translate – I think I recall an angled outer wall.