Rincon de Filo, in the seaside village of Veracruz, is worth the short trip (about 6 kilometers, or 3.5 miles) southwest from Playa Bonita. Classic Panamanian seafood, such as paella, is the specialty. The nautical decor is refined yet comfortable. And there is a funky blue playhouse and swing on the tree-shaded grounds for the kids.
The website has a video map to help get you there.