I have a good mind to start taking down a wall between the kitchen and living room. 1.5 story Älvsbyhus from '73. Most others with similar houses I've seen have already removed this wall. The wall runs in the opposite direction of the roof ridge. But I don't know if they've just torn it down or balanced it with something. I'll include a picture of the intended wall from the poor drawing I have.
It is not possible to say for certain based only on a floor plan; technical drawings such as a sectional drawing are needed, as well as knowing what kind of roof trusses are used. However, it is unusual for that wall to be load-bearing. Then there can be walls that are stabilizing, i.e., intended to prevent the outer walls from falling outward.