Accommodation Ideas
I don’t have experience, or relationships with any of the hotels listed below, but I offer some ideas that have been shared with me. Please conduct your own research to read reviews (TripAdvisor, Yelp, etc) and consider distance from Kelly’s Barn at 1360 Sumac Ave. (keeping in mind traffic conditions) in addition to the usual considerations for rates and amenities and proximity to Pearl St/downtown.
Foot of The Mountain Motel $99+: http://www.footofthemountainmotel.com/contact
200 West Arapahoe Avenue, Boulder, CO 80302
Hyatt $165+: Hyatt Place Boulder/Pearl Street
2280 Junction Pl., Boulder, Colorado, USA, 80301
Millennium Harvest House $114+: http://www.millenniumhotels.com/usa/millenniumboulder/?cid=ta-bl-bou
1345 28th Street, Boulder, CO 80302
Boulder Marriott $178+: http://www.marriott.com/
2660 Canyon Boulevard, Boulder, CO 80302
Transportation Ideas
The bus from DIA to Boulder is very affordable (I think it is $13 one way for the AB route): http://www.rtd-denver.com/skyRideFares.shtml
However, to get to Kelly’s Barn you may want a car (unless your hotel offers a shuttle, or you use Uber, or you are a road bike person and would rent a bike – Boulder is great with that!).