Dominik was extremely helpful, he helped us get to his place from the station and let us leave bags after checkout, his place is within walking distance from most tourist attractions but is also very near to public transport if you don't fancy the walk. The place itself is more like a hostel, there are six bedrooms and separate bathrooms and showers for boys and girls, the rooms are very clean and the kitchen has most things you need, it was a good base from which to explore Vienna