There currently are a variety of options to travel by night train from St Pölten (Austria) to Przemyśl (Poland), taking between approximately 11 and 13 hours: Namely the IC 40416, the IC 416 and the EN 416. 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).
The ÖBB usually offer four types of carriages in their night trains: seats, couchettes, Mini Cabins, and sleepers.
Seats are for the bravest, while couchettes, Mini Cabins, and sleepers provide a more comfortable journey. In the couchettes, you can find simple and rather narrow berths. The Mini Cabin is a compact sleeping option for solo travelers – two Mini Cabins can be combined for couples. Sleepers are equipped with proper beds 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 may include a private bathroom or shower, or sometimes just a sink. The Mini Cabin bridges the gap between couchettes and sleepers, offering solo privacy at a lower price point.
ČD, the Czech national railway, operates domestic and cross-border passenger trains linking the Czech Republic with its neighbors.