Hotel
This hotel is in downtown Decatur. It's a clean, well-lighted place near restaurants and shopping.
Flight
Atlanta's airport is big, efficient, and about a 25-minute cab ride from Downtown Decatur. It's easy to grab a Lyft or a rental car from the airport. Atlanta has a mass transit system, but it does not compare favorably to the transit systems in DC, NY, or Chicago. It's pretty easy to get around by Lyft. Carpool when you can. Consider renting a car.
Hotel
This hotel is simple, clean, and lovely. It's a 12-minute car ride from the wedding venue. It is within walking distance of shops and restaurants.