This page has a list of recommendations of places to stay and places to eat while you're in Atlanta.
To Stay - Airbnb
Airbnb would be our first recommendation when booking a place to stay in Atlanta. It's easy to use, it has a more homey feeling than a hotel, and there are options that are cheaper than a hotel.
There are tons of hotels to stay at in Atlanta. We recommend choosing a place downtown as the wedding location is at Grant Park. Here are some of the options that are closest to us: