The Style Cure 14th Assignment: Flow? What Flow?

There is only one door in my son room, and one window. Unless you wanted to "flow" out of the window, I dun see a need for "flow" in his room.

Instead, we are trying to create more hideout space in his room so that he can hide for whatever reason. We also need a big empty space so that my son can build his lego city on the floor. I will want natural ventilation in his room so I need my son to be able to walk up to the window and open or close it. That was my requirement.

Currently, he is playing his lego railway in my living room. Has been asking him to shift everything into his playroom, but he prefer to play in the living room.