Keystone Lodge is a two-story building with seven guest rooms, each with its own bath. There are 3 rooms on the first floor and 4 rooms on the second floor. For youth retreats, there are 4 rooms which house 10 youth per room using bunk beds and 3 rooms housing 4 youth each using bunk beds.

For adult retreats, each of the 7 rooms can house 1 couple or 2 singles using double and single beds.