I’ll start this post by saying I’ve never had to decorate a room with a corner fireplace, but based on my experience with floor plans, I can only imagine that it’s tricky. Using a larger piece of furniture—or even art—on another wall not only creates balance but takes some of the pressure off of the fireplace having to be the main attraction.
(Btw, it doesn’t bother me to mostly block the fireplace if you don’t use it on a regular basis.) Wood, stone or even bead board (depending on your style) are good options. And, finally, if you have one of those corner shelves above your fireplace that can be oh-so-awkward to decorate, here’s one of my favorite solutions via Shannon’s blog.