The blank walls, just visible on the right, are the third attic space and you might be able to make out a right-angled decorated section between the room box and the blank space to fill in the gap.
theinfill art deco dolls house blog, theinfill dolls house blog, theinfill 1930s-50s Deco House, Hogepotche Hall –Hodgepodge Hall – Medieval Tudor Jacobean dolls house blog – attic #1 the other half