Atlanta---will be coming into the airport on a Sunday around 11 am and have nearly a 10-hour layover. Am looking for a relaxing and rather upscale (but not too!) restaurant close to MARTA stop that would be serving from 1 or 2 in the afternoon. Any cuisine is fair game but don't want to spend more than about $80 for two. Less is better. Perhaps a restaurant near something that would be interesting to explore after we eat? Galleries, museum, neighborhood? Or perhaps we explore first and then eat, allowing for a restaurant that doesn't open until 4 or so. Suggestions much appreciated.