My wife and I stayed a week at Annemarie and Motti’s flat.
The location was excellent. We were no more than a 5-10 minute walk the airport bus, the subway, or the bars links the canal.
The flat itself, while small (but really, you are in the beautiful city of Vienna, you are not staying inside all day), was perfect for the both of us.
We didn’t get to meet our hosts, but when we emailed a question, they were quick to respond.
When we return to Vienna, we will definitely try to book this flat again.