Regina's flat was absolutely better than expected. Location wise, it is within short walking distance to the U4 (if you're flying from VIE Airport and taking the CAT/S7 train to Mitte/Landstraße, it is within the same U-bahn line) and two different bus stops. My family and I had a comfortable stay and fell in love with the flat (as well as her taste in art, music, and literature). There is amazing light, high ceilings, and great common space. We were mostly out during the day so it was a bonus to come back to a homey flat. Regina was a joy to communicate with and checked in with me to see if we needed anything else. When I come back to Wien, Regina's flat is where I would want to stay again!