...I thought it could be detailed out -without much cost in added polygons- by using the space for a wardrobe (closet? armoir?).  The doors will open, and there are side shelves for small items.

     Other ideas for furniture are bookcases (elves being learned folk), bunks tucked away along the kneewall junction, a study/writing desk in the sunbay downstairs, and a basic kitchen.

     All of this stuff would be separate so that it can be omitted if not needed (for an exterior render) or if you find some other furnishings which you prefer.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5