I installed this in a small entry floor.  Wow! What an impact!  Lots of compliments.  I installed the tiles close together (same as faux grout line in the tile) and used a terracotta grout caulk to match the faux grout color.

The great thing about this floor is, that it does not show dirt, due to the antique/varied background!  Great for an entry especially!  Would highly recommend!