I came here based off of everyone's positive reviews and was very disappointed. We got the chef's special (usually a bad idea in the states but I hoped it would be better) and it was just 5 very generic fish - of various freshness quality. Salmon and squid good, tuna tasted old, hamachi was tiny, and grouper was blehhhhh. The beef on the lava rock was just bland meat with teriyaki sauce - you could tell the beef wasn't the highest quality and I've had much better at the chain Gyu Kaku. Given all that blandness, the food was heavily overpriced too! We left hungry and ate some more elsewhere in Santorini.
I love sushi (frequent Californian sushi eater) and wouldn't even consider myself an expert but there was nothing special about this Sushi joint. I had to rate lower so fellow foodies can beware - it's overrated by people who probably grew up eating convenience store sushi or something.
The only winning point was that the staff was super friendly and cute cats run around.