The playroom/nook. Playroom under stairs.
10 Incredible Kids Under Stair Playhouse DIY Ideas and tutorial
But with a more realistic, adult owl type
Charming Reading Nook Under Stairs.
This is truly adorable - can you just imagine the dreams! Under the stairs play/book nook perfect under basement stairs
Kids under stairs playhouse
10 Incredible Kids Under Stair Playhouse DIY Ideas