The apartment is perfect! I've been there for 2,5 months so I can recommend it for long time staying. It quite close to the city centre (even on foot), close to busses, trams and metro, too. Some shops are literally on the opposite side of the street. Apartment is new and perfectly equipped, in the kitchen you can find everything you need (and I cooked a lot!). There is washing machine and dryer, too. But the best part is definitely a bedroom with huge and really comfortable bed. Astrid and Ronald are excellent hosts, I could reach them any time. If you are looking for a perfect apartment in Vienna, you've just found it :)