Here's a few of my favorite restaurants:
Good Italian and great service - Mama D's
Great Fish Place - Bear Flag Fish Co.
Good Sandwich Shop - Big Belly Deli
Awesome "Dive" Bar w/ Great food - Mutt Lynch's
Seeing that you enjoy cooking most of your meals at home:
Great Produce/Cheap Prices - Grower's Direct
Best Meat/Butcher (Though the prices aren't cheap, they have great quality meat) - The Meat House
I've lived on the Newport peninsula for the past 4 years and have lived around Newport my whole life. Enjoy!