Popular mega-club with ridiculous sound system. Musical genres vary wildly, so check what's on before going.
Getting there: From the hostel, take the U3 U-Bahn line from Westbahnhof (direction 'Simmering') to Volkstheater, then switch to the U2 (direction 'Seestadt') to Schottenring.
Getting back: The U-Bahn runs back to Westbahnhof through the night Fri & Sat. From Sun - Thurs, the last train at night is around 00:30; After that you can either have a kebab and wait for the first U-Bahn at around 05:00, or grab an uber / taxi.