I would title this "finest in the Keys," but I'm not familiar enough with all the options to make that claim. But the Butterfly Cafe in Marathon is definitely one of the top in all the Keys. The location at Tranquility Bay resort is gorgeous; don't miss walking out past the pool and tiki bar to the beach. The menu has gorgeous sections. We shared the Butterfy Salad (yummy) served with wonderful breads, and also shared the panko-crusted grouper which was beautifully prepared with potatoes and vegetables, all superb. Our server, Cheryl, was prompt, helpful, and friendly. If we visit Marathon again, we will stay at Tranquility Bay so we can experience more of the great eats at the Butterfly Cafe and try out the tiki bar!