In St. Marks's Square in the Venetian Hotel.
The service was horrific. Not only did his Spanish speaking friends butt in line, they took 10 minutes to decide (no exaggeration). while we waited He gave them two scoops in a small cup. So when I ordered after them and 2 scoops, he wanted to put it in a Large and charge. The guy's attitude was so surly after questioning him, I really didn't even enjoy my gelato after.
I did have 1 scoop of bacio and 1 scoop of amaretto. Cost with tax: $8.11. Ridiculously overpriced. But the gelato wasn't too bad, and this is coming from someone who has been to Italy 4 times.
Total of 2 stars: 1 star for the guy being an ass and it being way overpriced, 1 star for actually tasting good.