Take a look at this map: Atlanta Map. That's where the Days Inn is located. The CNN Center is next to Philips Arena... just a couple blocks Southwest and across Centenial Olympic Park. Looks like walking distance to me (if the weather's nice)/.

And you can always use the Marta Rail to get around other parts of Atlanta.

Good luck. I hear the new Georgia Aquarium is a must when in the ATL. If you go, let us know what you think...