I guess a pro would be that it's better for TV placement assuming you don't want it over the fireplace. Since it's in the corner you can put the TV straight in front of the furniture instead of off to the side.

Corner location really works best if you want a fairly small fireplace...and it usually creates more challenges for furniture arrangement...there are lots posts on Houzz asking what to do with corner fireplaces and ones that are placed close to the corner rather than centered on the wall..in many cases corner fireplaces make a room feel lopsided..