Great sofa so far, most important thing to know-  The measurement for the corner piece is wrong- it's ~48x48 and (thankfully) not 63x63.  This was great news to us as we thought we may have to not use one piece, but we took the gamble because looking at the pic it didn't make sense that the corner piece was that big and the measurements don't add up. 

Anyway, it fit.  It looks amazing and it's very comfortable- the corner nook is comfy and we love it.