Martin's flat is the prefect accomodation in Vienna to discover this amazing city ! It's easily accessible from the airport with CAT train in 16 min, and then 5 to 10 min walking from the station. The area is quiet and peaceful, 5 min walking from the river and from shops (Spar). The design is lovely and the check-in/check-out is smooth as Martin prepared a detailed guideline with all the information you need (transport, maps and pictures to find the flat, wifi code, etc.). He's also really reactive when you send him a message. I especially loved the different teas offered for the breakfast :)
I recommend his place and I would definitely come back for a next trip in Vienna !