Well, it could be about the unique experiences of travelers staying in a hostel. Maybe there were some great friendships formed among the guests. For example, two people from different countries met in the hostel and ended up traveling together for the rest of their trips, sharing cultures and having amazing adventures.
The 'hostel based true story' might involve some strange happenings. There could have been a lost item that was miraculously found through the combined efforts of everyone in the hostel. It shows how a hostel community can come together and help each other out in unexpected ways.