Personally, we thought that Eric's flat was perfect.
It is immaculately clean, simply but tastefully furnished, and incredibly quiet.
It is easy to access even if you have mobility issues as is located on the ground floor. It overlooks a beautiful courtyard with trees and flowers to match the idea we had of Austria.
To reach the centre of Vienna is quick and easy . Just a short few minutes with a tram and then change with their U system (underground or subway for our American cousins).
And lastly, Eric, the host, is friendly and easygoing. He was incredibly helpful and made us feel very welcome.
We will stay with him again when we come back to his amazing city.