Take the Subway line no. U6 in the direction of Floridsdorf. Get off on the 6th stop (Waehringerstrasse - Volksoper). Use the exit in the direction of Fuchtshallergasse. Go straight ahead and turn right in the Wilhelm-Exner Gasse. At the end of the street on your left you'll find Alibi Hostel .

From The Suedtiroler Platz Busbahnhof (Bus Station):

Take the tram number 18 in the direction of Burggasse Stadthalle and get off at the Westbahnhof. Then follow the way described above

From the Vienna International Airport:

Take the a bus from The Bus Services Vienna Airport Lines. Get off at the Westbahnhof in Vienna. Than take the Subway line no. U6 in the direction of Floridsdorf. Get off on the 6th stop (Waehringerstrasse - Volksoper). Use the exit in the direction of Fuchtshallergasse. Go straight ahead and turn right in the Wilhelm-Exner Gasse. After a few meters you'll find the Alibi Hostel.

Mind you the street spreads on both sides of big road called Waehringerstarsse and you need to cross this road to get to the hostel.