That's downtown and you won't want to spend any evenings there. I work about five blocks from Peachtree Center, and there is jack shit to do downtown.
You didn't say what you're interested in doing. Bars, clubs, dinner? If dinner, what kind of food and what's the per diem?
To add to the above, if you go to the Highlands, Fritti is great for dinner (isn't that more the Inman Park area?), but the main life in the highlands starts around Ponce and...