The Spartanburg Marriott (1-800-228-9290 or 596-1211, locally) is downtown on N. Church St., a short drive from the event site; it is the newest and one of the higher-end facilities.
A delightful bed and breakfast very near the dance is the Inn on Main.
All of the national chain motels are represented, most convenient to the exits off of Interstates 26 or 85, or Business 85. Consult the "Directions" page of this web site for the route you will take to the Ball, and look for a motel located near your exit.
As always, you can contact the web master with questions or for personal recommendations.