Xiao and his house is a perfect place to stay in Wien. We travelled by car, and we parked the car in the near P&R (Park & Ride) Hütteldorf garage, just 12 minutes by foot and only 3,60€ per day. Very very cheap!
The place is recently renovated with fresh new furniture. The two beds are great and the space is so big, with a separate kitchen and 1,5 bathroom.
The home is near Schönbrunn Palace (Sissi's castle). We always moved by car, because U4 this year (2019) has some working in progress, so you need to change the Tram and make some path by Bus.
Anyway, the place is so clean and big, also the Terrace is so big with a nice garden. You have the train binaries near, but you will not hear that (because of the windows that have good acoustic isolation).