We were with a friend who spends a lot of time in Vienna. We had tickets to a show in the Museum Quartier and wanted to eat before it started. He took us to I Ragazzi. The waiters were all Italian which made it feel authentic and I started speaking to them in Italian instead of my broken German. I had pesto pasta and a small salad which was more than I could finish; and I'm a good eater. The salad was very fresh, you dressed it yourself with olive oil and vinegar. The pesto pasta was one of the best I've had. My dining companions had a chicken dish and the evening's special which was chicken with tortellini. Both of them thought the dishes were very good. I had a house red wine which was good and my companions had local beer. I didn't notice the cash only policy as that was how I was paying. We were in and out quickly with time to get to our show. I was wishing we had more time as I really enjoyed the food. I would go back.