Use lime, cement plaster, or gypsum plaster in the living area?

Both have their justification

I'm only concerned about the climate.

We have lime-cement plaster in the bathroom of the current rental apartment. Attached is a photo. Our construction coordinator showed us this also for the living area in one of his apartments. The grain size was not as coarse there, and we liked it. Therefore, we will probably choose lime-cement plaster for the entire house. If the kitchen is not a damp room in terms of humidity, then I don't know either. Boiling potatoes for 30 minutes produces as much humidity as a 10-minute shower.

In winter, the air is usually too dry anyway, so the air absorbs the moisture and by no means the plaster. And in summer, the windows are open. So what? The kitchen is not a wet room for that reason.

Everyone is entitled to their opinion. Your reasoning also applies to the bathroom. Or is it only a wet room for you when you can walk through it with a water hose like in a slaughterhouse?

The fact is, a kitchen produces moisture, and not insignificantly so. It ranks directly second after the bathroom, followed by the bedrooms, then the living areas, and lastly the storage spaces.

Apart from the moisture & plaster issue, we find lime-cement plaster appealing. It may be more expensive in terms of equity, but overall it is cheaper than lime-gypsum plaster due to easier, faster handling with less rework involved. Additionally, the plaster relatively well conceals small "flaws."

In the bathroom, however, you might have splashing water and if you shower for a long time you run 200 liters of hot water through. So the comparison between bathroom and kitchen is not realistic in my opinion. When I leave the bathroom I can no longer see anything because of the steam, in the kitchen I have never experienced that.

In the bathroom, however, you may have splashing water, and when you shower for a long time, you run 200 liters of hot water through. So in my opinion, the comparison between bathroom and kitchen is not realistic. When I leave the bathroom, I no longer see anything because of the steam; I have not experienced that in the kitchen yet.

Regarding water consumption, I definitely recommend water-saving shower heads.
I just googled out of interest that 5 minutes of showering uses about 50 liters of water on average. Pretty intense.