Location: Immediately adjacent to Westbahnhof, with airport bus just outside the front door. We arrived at the train station, walked to the hotel to spend the night, then caught the bus to the airport the next morning.
Thermostat (apparently centrally controlled) was set at very warm temperature and we had to open window for air. This was in January, with outside temp below freezing. But this seems common in Austria; all the hotels we stayed in were too toasty for comfort and with no air circulating.
Great location beside the train station and bus terminal (shuttle to the airport), and walking distance to cafés, restaurants and shops.
Breakfast options are limited.