The retreat center at Merom sleeps whole groups: cabins and group lodging on the old college grounds, booked by congregations, youth camps, and family reunions. The grounds book as a whole rather than a room at a time, so call well ahead of the date.
Camping carries the rest. Greene-Sullivan State Forest has primitive campgrounds at Narrow Lake, Wampler Lake, and Reservoir #26, about a hundred family sites between them, plus rent-a-camp cabins and a horse camp near Ladder Lake. Shakamak State Park adds modern and primitive campsites and family cabins across 1,766 acres and three lakes.
Sullivan County Park & Lake takes tents and RVs and rents deluxe cabins with a full bath, March through October. Six more sites sit at the top of the bluff at Merom Bluff Park, two hundred feet above the Wabash, booked through the Town of Merom.
For a room with a door key, the Days Inn is on State Road 154 west of Sullivan. The Inn at Fairbanks Landing, up at the Fairbanks Community Center, has indoor rooms with a shared kitchen, laundry, and dining room, and it books by the season as well as by the night.