Having been to Santorini more than eight times (i admit it, i am addicted to the island), i can honestly say that "Kapari" tavern is one of the best places to eat on the whole island. Located in Fira , just two minutes walk from the main square (Note: not to be mixed up with other restaurants called "Kapari" in other parts of the island), its a cosy place, that offers a friendly environment and-primarily- excellent food in reasonable prices, sth highly uncommon in Fira, as the restaurants and taverns tend to offer either good but extremely overpriced food or vice versa. Service is fast and the staff is as really attentive without being annoying. I personally recommend "seftalia" -my favourite- and the cheese with honey and sesame, but the quality remains high no matter what you order. Overall, its a place that should not be missed when you visit Santorini.