Alex is a very nice host who accommodated my early arrival, welcomed me downstairs and even carried my suitcase up the stairs after a long flight from NYC. Being from Austria myself, we had a nice chat, he gave a quick and comprehensive overview of the place and it's little perks. I know the area, but Alex would have gladly explained the surroundings and assisted in any way possible.
The place is basically a one bedroom apartment with a small kitchen in a classical Viennese apartment building where one quickly feels at home. Big enough for a couple to spend a week or two, equipped to cook at home, wash clothes and neighbors are quiet, providing for a pleasant stay. It's located close to the city center (15 mins tops to walk, or a few bus stops away) , with a decent grocery store and butcher nearby.
In summary I recommend this place for a very nice and cozy experience in a typically Viennese setting within walking distance of the city center, and a very kind and helpful host.
ThW