Donat has been the best ice cream shop in Zadar since 90's when I used to go there with my parents. I continue to go there and was there last time this summer. The same rich ice cream flavor, price and quantity have remained the same. It's one of the few places that have kept the high quality and vibe that made them famous.
After taking a scoop or two, I recommend taking a seat at the small tables in front of the place and watch the people as they pass by.