Door, space separator options with limited frame space?
I'm still not 100% clear, however, I can think of 3 options:

Make both doors pocket doors.

These slide into the wall and are, therefore, quite narrow. Where the door butts up against the &quot;PARVEKE&quot; wall, it would only be 1&quot; - 1 1/2&quot; wide (~25-37 mm) and should fit against the trim between the existing window and door in that wall.
You would, in effect, be using the &quot;PARVEKE&quot; wall as the right side of the door's frame instead of using that part of the frame. This would take some careful work to ensure that the door's top track/frame is accurately attached to that wall so the door can slide properly.
The door would open into the wall to the left (from the point of view of the drawing) and close to the right against the window/door trim.
You might need to adjust/replace the existing trim so that it's a flat surface for the door to close against if you need a good, tight closure. i.e. if you have some sort of curved surfaces on the trim now, the door may not fit well against it.
A matching pocket-door (opening whichever direction is most convenient/aesthetically pleasing) at the other location is an easy install.


Make both doors barn doors.

Barn doors slide along the wall (instead of inside the wall like a pocket door) and don't swing. They take up minimal floor space.
It's possible that the door that meets the &quot;PARVEKE&quot; wall will butt up against the trim (you'd want it to be on the window side, not the door side) and that may not be optimal, but you would still be able to operate the window.
Install a matching door at the other location.


Offset the &quot;PARVEKE&quot; wall door further to the left.

This will take the most work.
Build a short stub wall dividing &quot;MH&quot; and &quot;OH&quot; and have this meet the &quot;PARVEKE&quot; wall, replacing the trim between them with a wall at a 90° angle.
You now have the exact same wall condition for this door as you do for the one to the left and you can use any door you choose in any width you desire without worrying about running into the trim between window and door (since that trim no longer exists).



A fourth option:
Drop the door at the &quot;PARVEKE&quot; wall and go with only the door on the left.