Directions from The Grand Ferdinand to the conference location (Haus der Industrie) can be found here.
Directions from Hotel am Konzerthaus to the conferece location can be found here.
From the airport in Vienna you can take the CAT (City Airport Train) to Center Wien Mitte. The train leaves every 30 minutes and will bring you within 16 minutes to the centre of the city. From there it’s about 1 kilometer walk to the hotel(s) and conferece location. You’ll find the map with Center Wien Mitte and the hotels here.
Information about parking near the conference location can be found here.