On a recent trip, I had longish layover in Atlanta and decided to take the opportunity to visit The Club at ATL, one of the many lounges that you have access to if one of your credit cards (such as Platinum Amex, Chase Ink, Citi Prestige, etc.) offers a Priority Pass Membership. Thanks to a tip from Lucky at One Mile at a Time, I knew that I could use the Priority Pass App to access their lounges, provided I set things up ahead of time.
The Club at ATL is located on the mezzanine in the International Terminal, and you can spot it pretty easily as you come up the escalators from the tram.
This is, by no means, a swanky lounge. In fact, the food offerings when I visited where markedly inferior to those at the nearby Delta Skyclub. However, it does cover the basics.
There's a bar, with a decent selection: