Really close to subway from where you are just 7 stations away from Stephansplatz (Line U3). We parked our car at Park + Ride Ottakring garage for 4 € / 24 h. Garage is 20 minutes walk from apartment. Apartment was clean, we had some problems with Internet connection at first but our host responded quickly to our messages and offered help. At the end we managed to solve the problem on our own.
It is close to "Kleingarten Verein Zukunft auf der Schmelz" - Central Europe's largest allotment facility in the built-up area. I walked my dog in the morning there, and find it fascinating, as it covers a really wide area in the middle of the city. I just wished that dog owners clean green areas after their dogs more, as it was really hard to avoid stepping up at dog poop along main walks there.
Overall we had a great stay and would recommend it. Good value for money.