If you're looking for a stay in Vienna, you should take this. Josef's house is well connected by public transportation, not too far to the centre. Moreover, Josef is very kind and patient. My train was canceled so I needed to book another train and reached his place at 1am. However, he still waited for me, explained for me how to explore the city.
Josef's place is filled with all the amenities you need, don't hesitate to ask him.
I had a pleasure time staying at his place, definitely come back if I go back to Vienna