There currently are a variety of options to travel by night train from Hässleholm (Sweden) to Storlien (Sweden), taking between approximately 13 and 15 hours: Namely the 24 and the 3900. These lines are operated by Snälltåget.
Snälltåget offers night travel with various comfort levels on night trains between European cities.
Accommodation ranges from individual seats in coaches to shared compartments with up to six berths and private compartments for small groups. All beds include bedding and blankets.
Both shared and private compartments transform from day seating configuration to night bed mode. With three berths per side and ladder access to upper berths, private compartments offer the best option for groups.
Animals are permitted in private compartments only. Bikes are not allowed, but collapsible bicycles can be transported as hand luggage or stored on luggage racks.