I stayed at Dominik's place while in Vienna for the Vienna City Marathon. It was a comfortble and quiet place to stay. It is about a 3 minute walk away from Metro station, and from there takes about 15-20 mins to get to city center. Dominik was incredibly kind and helpful. My only complaint is that there is no elevator at this residence, and the room is on the 4th floor! Not the best for post marathon :-) Would recommend for anyone coming to Vienna!