I really recommend staying in Alexander's appartment. It is well located, clean, and really beautiful. The appartment is close to many supermarket, restaurant and well served by the public transport.
I had a very good time here and I really hope to come back in Vienna and stay again in this appartment.
Alexander is great host, he help me a lot with all I had to do. He have always good informations and tips for Vienna which were always accurate. It's really easy to talk to him and he has always answer me quickly when I needed.