After revising several different models, I finally have one organized flat, which will be very closed and have openings (slits) for the light to illuminate the space.
I hide the exterior walls to show the interior, but in the real life, it will look like a hexagonal box with few openings.
Now I have the major spatial organization, so I will work on the details (openings, floor dissolving to the walls etc). I am hoping to finish it by the end of the day (or really late...)
The black texts are indicating the program in the flat, and the green texts and lines are indication the light (where the light will be etc)
Front Side

Back Side
