Stefan's is right near the bus and train stations that will take you straight to central Vienna. It's tricky to find the entrance to the apartment; best to google map it before checking in. Stefan was very patient with our check-in. Also quite a few stairs to the third floor and no elevator access. Not an issue for us, but something to beware of. The place matched up perfectly to pics on the profile, and even had a tub and Netflix. Highly recommended!