Used to live in Savannah, lots of good food. Generally better and less touristy the farther you get from River or Bay St. Basically I'd stay in the area between Montgomery and Broad (or even Abercorn)for W/E and the River and Forsyth Park for N/S
Collins Quarter for breakfast/brunch/lunch
The Public Kitchen and Bar for lunch/dinner
Treylor Park for casual food
Garibaldi's for fancier seafood
Alligator Soul for fancier steak/game
Circa 1875 for French
The Grey
Old Pink House or Mrs Wilkes Dining Room for more touristy but still good. Mrs Wilkes likely will have a line.
Lots of bars but for actual cocktails,
The Artillery
Alley Cat Lounge