I really like the look and the dark wall! Love the black wall - make it an accent wall? Hardwood floors with rugs for master bedroom. This is what my bedroom will look like when we move! But with blue walls and a black wall.
Hang a curtain rod draped with sheer curtains (or fabric) at headboard height, behind the bed, then add some white holiday lights behind the fabric and across the rod.--- maybe just a string of lights over the headboard :)