There is lodging of all types on and off mountain. "Ski in Ski out" lodging means just that -- it enables you to generally, but not always, leave your parking worries behind. Many condo and vacation rentals that are in developments offer shuttle buses to the lifts.
Killington vacation rentals by owner are often a bargain but should be carefully screened. Here's one long standing resource:
The Inn of the Six Mountains, 2617 Killington Road, Killington, VT 05751, ☎ 1-800-228-4676, . checkin: 16:00; checkout: 12:00.