We (couple with 2 of our grown-up children) had a great time in Vienna and Justine's flat played a great part in this lovely Sylvester vacation. The apartment is spacious, warm, and very nicely furnished and decorated.
Its location is great, in one of the best area in my opinion (assuming you prefer a lively neighborhood with trendy shops and restaurants to the touristy center of town), very close to the fantastic Naschmarkt and to the Museum Quartier.
Justine also shared their favorite restaurants' list, and we liked the off the beaten paths experiences.
Her charming in-laws were welcoming and easy to communicate with (we can speak some German).
The flat is ideal for a family (even for our grown-up children), but may be not for a group of friends because of the en-suite bathroom.
We felt very much at home after only 4 days.
We highly recommend this flat.