Thomas is an excellent host and the apartment is great. It's very close to the city centre (15 min walk) and also very close to a big station (Praterstern) and you can effectively go anywhere you want with public transport including the airport which is a 30 min ride. The area where the apartment is located is very nice and there are a lot of families so it feels safe.
The apartment is very clean and it has everything you need even for a longer stay. Highly recommended.