I've been going to this place from the beginning. This is TRUE Japanese food, Ramen, Curry, Sushi etc.. is authentic and not made like you'd get at a asian fusion place. I'd say if you come with an open mind about the sushi you'd like it otherwise stick with the Ramen and Gyoza can't go wrong there!
Service can be a bit scattered but everyone is very friendly, this is a family owned restaurant so it's not always "ran efficiently". But in the end you come to a restaurant for the food not the great service ala Peter Lugers. With that said everyone that has worked in their is quite friendly.