There currently are a variety of options to travel by night train from Berlin (Germany) to Stockholm (Sweden), taking between approximately 15 and 18 hours: Namely the 10300 and the EN 344. These lines are operated by Snälltåget and SJ.
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.
Pets are only allowed in private compartments and must be registered during booking. Bicycles cannot be brought on the train, but folding bikes can be stored as hand luggage in the compartment or on luggage racks in the seating coach.
The Swedish Railway SJ operates night trains daily throughout Sweden, covering long distances and serving remote areas.
The night trains include seating cars, couchettes, and sleepers. The sleeper cars provide compartments for two or three people as well as single compartments. Some routes also offer Deluxe compartments with private bathroom facilities and shower.
Each sleeper compartment has a washbasin. The Deluxe option additionally provides a private bathroom with shower.
The couchettes offer space for up to six people with access to provided bedding and toilets in the carriage corridor. The middle berths fold up during the day to create seating areas. Compartment options include women-only, men-only, or mixed assignments. Private couchette compartments are available for travelers with pets upon request.