Visited here on TA recommendations. Lived up to expectations! Interior is clean and with a definite 1930's art deco feel. Staff friend and attentive and immaculately turned out. Smoking area separated from the non-smoking area with a glass partition that can be closed, and if you use the entrance on the right you don't have to pass through it.
Menu had plenty of options but only in German - though I have no doubt the waiter would have helped if required. I was in early evening and reserved notices were going down on tables already. Booking is suggested to avoid disappointment. Credit cards accepted.
Food good - typical Austrian fare but to a better standard than I had elsewhere. Recommended.