There currently are a variety of options to travel by night train from Salzburg (Austria) to Zawiercie (Poland), taking between approximately 9 and 11 hours: Namely the IC 40406, the IC 406 and the EN 406. These lines are operated by PKP Intercity, ÖBB and České dráhy.
PKP Intercity is Poland's national long-distance railway operator, running domestic and international train services throughout Poland and to neighboring countries.
The Austrian Federal Railways (ÖBB) operate the Nightjet and Euronight trains (the latter together with other national railway agencies).
ÖBB night trains typically feature four types of carriages: seats, couchettes, the compact Mini Cabin, and sleepers.
While seats are only for the bravest, couchettes, Mini Cabins, and sleepers offer a more comfortable journey. The couchettes usually feature simple and rather narrow berths, while the Mini Cabin provides a compact private space for one person. Two adjacent Mini Cabins can be combined for couples. Sleepers boast beds with duvets and pillows and sometimes even a private bathroom. Couchettes accommodate up to six people, Mini Cabins are designed for one person each but two can be combined for couples, while sleepers are private compartments for one to three people.
Sleepers sometimes include a private bathroom or even a shower, sometimes only a sink. The Mini Cabin offers a more affordable private alternative with its own compact sleeping space for one person.
ČD, the Czech national railway, operates domestic and cross-border passenger trains linking the Czech Republic with its neighbors.