try vrbo.com....there was a local that was renting out a house/cottage, but I'm not sure if he is still doing so. Hotels are always an option, with several decent ones in the area of I-20 & Washington Road or I-20 and Belair Road (both 20 minute drive depending on traffic). There are plenty of places to camp if you're okay with a camper or tent. The only cabins that I know of are at Mistletoe State Park (Winfield GA, 30 minute drive) or Hickory Knob State Park (McCormick SC, 30-40 minute drive), but there may be more that I don't know about. Your best bet for more info (including other trails, current trail conditions) is to hit up the local forums at www.sorbacsra.org
(click FORUMS at the top of the page).