In Vantaa, there was Finnish Housing Fair in summer 2015. A Dekotalo-house got functionality and style in the childrens' room with a Liune door. 

Liune door leaf slides inside a normal-sized partition wall. So it does not need that thick of a wall, just an ordinary one is enough. It creates more space because it doesn't need to turn. Building with Liune is efficent and controlled.