I had a comfortable stay at the Courtyard Atlanta downtown over the Thanksgiving weekend. If you're looking for reasonably-priced downtown lodging, you could hardly do better. Staff was unfailingly helpful and gracious, and the facilities were generally relaxing.
But next time I visit ATL, I may spend a bit more and stay elsewhere because of the following nits (none of which were very important, just unexpected hiccups in an otherwise good stay):
*the rooms are small, and many are oddly shaped. While I love the re-use of historical buildings, as is the case here, I wish floorplans and hallways would be a bit more "standard"
*the business center is directly behind the mini-mart -- easy to miss. Also, while it's free, users are locked into Ask.com for just about all transactions
*the elevators are exceedingly slow, and occasionally need the "open door" button pressed after you arrive at your floor
*a major MARTA stop is right outside the door. While this will save you $40 on a cab ride to the airport, the downside is, the immediate area can be full of panhandlers at night
This Courtyard is your downtown budget choice. Next time, I'll pay ~50% more and see what some of the neighboring properties offer.