We had a wonderful time in Vienna. The flat was clean and was perfectly fine for two people. It was not righ in the very middle of the city but thanks to the fantastic public transportation we could reach every corner of the city in a very short time even on the weekend. I really recommend to check the 1, 2, 3 and 7 days tickets, because You can save a lot of money. Supermarkets and restaurants are very common so You can decide to go to a restaurant or buy some food and cook eat at home. Overall Vienna is a really nice place to visit and Sonja's place was just perfect for our stay.