Black and white is always right
There's nothing more timeless than a black and white room. Like a Chanel suit, it never goes out of style. The key is to balance the amount of black in the room and this depends a lot of the size of the space, the architecture and your personality.
In many ways black and white is one of the easiest colour schemes to master. Look to nature to inspire you. Even black walls can be beautiful in the right setting.