Sleeper bus

A Van Hool sleeper bus in Britain. Upstairs are 14 bunks and a lounge area; downstairs is the galley and a second lounge area.
Ayats Bravo sleeper in the UK
Bunks in a Jumbocruiser Ayats band bus
Sleeper coaches are not only used by bands. This one was used to shuttle England football fans to and from the 2006 World Cup in Germany.

A sleeper bus is a type of specially adapted coach which is designed for the passengers to sleep in.