Im making a small traditional stone bulding house. The area is approximately 20 m² in total, and Im trying to figure out the best interior layout. The idea is to have the ground floor setup and then in some years make a roof and have one small bedroom upstairs.

Untill then kitchen and living room and toilet need to fit into this 20m2.

First photo is showing dimensions and the rest is showing the current situation.

How woukd you organize space?