There currently is one option to travel by night train from Padborg (Denmark) to Nässjö (Sweden), taking approximately 6 hours: Namely the EN 344. 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.
The seating car is the most affordable option, offering compartments for up to six people as well as open-plan carriages. Power sockets are available at every seat and a seat reservation is included in the ticket price. Toilets are located 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.
SJ night trains offer seats, couchettes, and sleeper cars. The sleeper cars feature various compartment types: for two or three people and single compartments. On some routes, Deluxe compartments with private bathroom and shower are also available.
Each sleeper compartment has a washbasin. The Deluxe option additionally provides 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.