We had a great time in Vienna! Armin is super friendly and helpful and will respond to your inquires in very fast.
The apt. was perfect for us, clean and charming and very well equipped. It is located 3 blocks from the tram and it is just 1 stop to the subway station if you do not want to walk there, no more than 10 minutes from the city centre. The area is quiet and safe. We would gladly recommend it for a stay in Vienna.