All that’s left now are Buckhead and the Airport. If you have the budget, you can still stay in a downtown conference hotel, but you’ll have to purchase the Plus Pass for access to the Omni and the Westin Peachtree Plaza.
Of course, there are options outside of the official conference blocks if you want to stay close. If you can find availability at a hotel near one of the conference hotels, you can always walk over and hop the bus. Airbnb is another option if your travel policies at work allow.