ATLANTA— GuestHouse International Franchise Systems has opened the brands first location in Colorado. The 60-room two-story GuestHouse International Inn in Keystone is proximate the Keystone Mountains, the third largest ski resort in the U.S., and the closest lodging facility to the Arapahoe Basin Ski Resort, the oldest ski resort in Colorado. Converted from the Arapahoe Inn, the property is owned by Roman Kowalewicz.