HI–Waterton International Hostel (403/ 859-2151, May–Sept.) is part of the plush Waterton Lakes National Park Lodge. It’s housed in the Waterton Health Club and Recreation Center, on the corner of Cameron Falls [1] and Windflower Avenues. This is an exceptionally nice hostel, with the benefit of discounted admission to the health club. (This may be the only hostel where you can arrange to have a massage or a manicure!) A bed in a small, tidy bunkroom goes for C$31 (Hostelling International members), C$35 for nonmembers. Family rooms cost C$93 for members and $101 for nonmembers.
Links:
[1] http://www.moon.com/destinations/montana/glacier-national-park/waterton-lakes-national-park/sights/other-sights