There currently are a variety of options to travel by night train from Stockholm (Sweden) to Padborg (Denmark), taking between approximately 10 and 13 hours: Namely the EN 345 and the 13471. These lines are operated by RDC and SJ.
The Hamburg-based railway company RDC Deutschland runs the RDC Euronight between Berlin and Stockholm. The train departs Berlin in the evening and arrives in Stockholm the next morning after approximately 15 hours.
The train offers two sleeping car categories. In the 1st class sleeper, private compartments accommodate up to three people with wide, made-up beds, a private bathroom with shower and toilet, and breakfast served directly to the compartment. The 2nd class sleeper has two-person compartments with a washbasin and 230V socket in the compartment; the toilet is in the corridor. 2nd class sleeper compartments can be booked privately or shared — in mixed or women-only configuration.
Couchette compartments accommodate up to six people and can be booked privately or as individual berths. All berths come with a pillow, sheet, and blanket. Washrooms and toilets are available in the carriage.
As the most economical choice, the seating car offers compartments for up to six people and open-plan seating. Each seat comes with a power socket and an included reservation. Toilets can be found in the vestibules at the end of the car.
Passengers in sleeping car compartments — both 1st and 2nd class — receive breakfast delivered to their compartment. Couchette and seating car passengers are not provided with breakfast.
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.
All sleeper compartments at SJ are equipped with a washbasin. The Deluxe compartments additionally offer a private bathroom with shower.
Couchette compartments accommodate up to six people. Bedding is provided including pillow, pillowcase, sheets and blanket. During the day, middle berths are folded up so lower berths can be used as sofas. You can choose between women-only, men-only, or mixed compartments. SJ offers limited couchette compartments where pets are allowed, and these must be booked as private compartments.