Our family of four visited this restaurant on returning to our hotel from the Prater. We sat outside on a pleasant summer evening with a nice view of Ruprecht's Church. The service was OK and the food was very acceptable - good gulaschsuppe, schweinshaxe, etc. Normally, this would rate a three but the owner/waiter brought bottled water we did not order and ran the tab up by about 9E. Then, when we went to pay, the credit card machine was "broken" and we had to scrounge up the cash to pay. This should have been mentioned when we arrived, if true. The hotel told us that a number of restaurants pull this so they don't get hit with the credit card charges. The overall cost was about 15 higher than comparable restaurants at which we ate. I would not return here again. Too many other better restaurants (Zu den 3 Hacken) in the area.