Wish you'd say where you're staying and what kind of foods you're interested in. There are over 2550 restaurants in the city--over 50% of all Tennessee restaurants.
We love to go to Maggiano's Little Italy on West End just past 31st St. North--especially with 4 or more people.
For barbeque, many swear by Martin's Barbeque (# of locations). Peg Leg Porker is rated #1 in all round barbeque, and it's off Division St. on 10th Ave.--west of 8th Ave.
Why don't you go to Google Maps and find your hotel. Then magnify the map to where the restaurant icons show up and see what people are saying about the restaurants close to there?
There's a bunch of fine dining restaurants 2 miles north of north of downtown in the Germantown neighborhood. And there's another group of eclectic restaurants in East Nashville. The big party district also has great restaurants on Broadway at the River.