There currently are a variety of options to travel by night bus or night train from Prague (Czech Republic) to Bratislava (Slovakia), taking between approximately 4 and 6 hours: Namely the BUS Praha - Budapešť and the EN 40457. These lines are operated by Regiojet and ÖBB.
Regiojet operates both night trains and night buses across Europe, providing various travel options.
Their night trains feature several types of cabins, including seats that can recline slightly for added comfort, as well as private sleeping couchettes that accommodate one to four passengers, equipped with bedding and duvets. Wifi is available and breakfast and coffee are complimentary.
Regiojet night buses feature ergonomic seating that can recline for comfort, with generous legroom and amenities such as USB charging ports, free WiFi, personal entertainment screens, and complimentary refreshments available during the journey. There is also a toilet on the bus.
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.
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.