Bob M.
Yelp
I travel to Vienna every year, at least once, and I always go to Onyx-Bar for the beautiful service, the beautiful view, the fine Hendricks on the rocks, and the perfect club sandwiches. If you are not getting the most professional service here, you are not tipping properly. It's a beautiful place, in the middle of the first district, with a great view and great drinks, so you need to tip well to get the service you expect. I have no problem giving the waiter 20 Euro for my first drink. All goes well.
I LOVE this place.