Set up sleeping/living area for holiday home

We once had a closet bed with a sofa in a small house. We thought it was quite good and practical.

In your floor plan, I find the table for 6 a bit small.
I would take yours. Possibly replace a sofa with a hanging chair and/or a rocking chair.

Very athletic and ambitious to accommodate 6 people. 25sqm is not little, but with a double bed with two walkable sides, it can become quite oppressive in bad weather. What does the kitchen offer? In principle, it is advised, even if only one room is requested, to show the entire floor to rule out the possibility that there is potential in other rooms or that the target room might also have to be used for a wardrobe or something similar. I would definitely avoid further confining walls and rather work with curtains.

I find the table for 6 a bit small with your floor plan.

The table is 180 x 90. It's not huge, but don’t they say 60 per person? Maybe you could also go up to 2m and plan the whole thing as an extendable table.

What does the kitchen have to offer?

Nothing. It's a narrow corridor with one side as a surface area. I would have liked to show the entire floor plan, but I don't have it at the moment. The rest of the file is a plan that won't be implemented due to a lack of budget. If I have time tomorrow, I might be able to quickly sketch it. However, it probably won't help much since a renovation is not an option and the furniture there is supposed to remain.

...Target room might also still need to be usable for [Garderobe] or something like that.

As said in #1:

Kitchen, bathroom and Garderobe are available outside the room.

But maybe I can sketch it tomorrow.

rather work with curtains

You mean as room dividers? The walls in the drafts are all only half-height. But in the end, there were a few too many for me as well.