STF has ended its collaboration with Hostelling International (HI), which means that the membership no longer provides discounts at HI accommodations abroad. If you plan to stay at HI accommodations, you can purchase a membership directly through HI.
If you have an HI membership and want to book an STF accommodations i Sweden at the member prices, you will need an STF membership instead. Becoming a member is easy - just sign up on this page.