There currently is one option to travel by night train from Berlin (Germany) to Padborg (Denmark), taking between approximately 5 and 6 hours: Namely the EN 344 operated by RDC.
RDC Euronight is a night train operated by RDC Deutschland connecting Berlin with Stockholm via Hamburg and Copenhagen, running three times a week in each direction.
Two sleeping car categories are available on board. The 1st class sleeper offers private compartments for up to three people with a private bathroom including shower and toilet; breakfast is included. The 2nd class sleeper has two-person compartments with a private washbasin and corridor toilets. These can be reserved privately or shared with other passengers in mixed or women-only compartments.
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.
Breakfast is included for passengers in both 1st class and 2nd class sleeper compartments and is served directly to the compartment. Travellers in couchette and seating cars do not receive breakfast.