On the A7 / E55 (city motorway) take the Hafenstraße exit, continue straight ahead on Untere Donaulände. At the level of the ice arena turn left into Gruberstraße, after about 80 meters turn left into Ludlgasse, then immediately left again into the courtyard of the tobacco factory (entrance past the porter's lodge). The Roomle entrance is on the 2nd floor of Building 2 (where the train is located). Paid short-stay parking spaces are available in the courtyard of the tobacco factory. Alternative possibilities: Underground car park Parkbad or Medicent.