Really good sushi (it would be very good for Japan or Los Angeles; excellent for Finland), with…read morefriendly service, in a nice restaurant, at a good price. The drinks menu was extensive (I had their special cocktail, which was excellent; I'm sure the wine pairings were good as well.)
The best fish was definitely salmon (to be expected) -- several kinds in nigiri, sashimi, maki, or temaki. Lightly grilled was particularly good. The tuna wasn't quite as fatty or excellent as I've had in Japan or the best places in the US, but there are plenty of other great fish options.
Overall, this is a wonderful restaurant -- I'll be back whenever in Helsinki.