First option
We recommend taking a cab: a driver will be waiting for you with a name sign in the arrivals hall and will take you quickly, comfortably and safely to the hotel in a discreet limousine for € 65.
Second option
The second option is by bus - a "Vienna Airport Lines" bus runs from the airport to "Wien Westbahnhof". From Westbahnhof just take the U6 and in 4 stops to "Alser Straße" (direction Floridsdorf) you are at the hotel. 100 m up the street and you have reached the BoutiqueHOTEL Donauwalzer. The VAL1 bus costs € 10.50 per person.
Third option
The third option is by train - the S7 express train runs from the airport into the city to the "Handelskai" station. There you change to the subway line U6 and get off at "Alser Straße" (direction Siebenhirten).
This is certainly the "cheapest" option - but also the longest and most strenuous. We recommend that you choose one of the other two options. Tickets for the express train are available from the ticket machines at the stations.
Fourth option
Please do NOT take the CAT. The station is at the other end of the city and the connection from there is suboptimal, unless of course you want to explore the public transport system with your luggage in hand