My boyfriend and I had a wonderful time in this apartment. I really liked the location - it's a quiet and spotless street just by the theater and it's based closed to u6 line (Gumpendorfer) or just 10 minutes walk to Westbahnhof and Mariahilf shopping street. And of course, if you like just wandering the streets like us, you can reach the city center by foot. For example, the Nashmarkt is about 20-25 minutes walk.
The apartment itself is nice and clean, hosts are helpful and polite. I totally recommend!