Kura is an interesting study in how not to run a restaurant. The food is very good. My wife wanted to give this a 4, but I would have been happy with a 3 or 3.5 if that were available. We settled on the 4 because the truth is, the food here can actually be very good. The chef is way above average in skills.
Having said that, the service sucks. The girls are generally sweet in disposition, but they move slowly and are inattentive. That rattles me a lot. When I go to a restaurant, I expect good service, and that's why I pay top dollar for my dining experience. If the problem lies in not having enough staff, then they need to hire more. Anyway, whatever the reason, the service is slow.
As far as the decor, it's pretty basic. The main door into the place is pretty cool, but once you're inside, it's unimpressive and drab. You can't succeed in the restaurant business with only one good component. Serving great food means nothing if the customers don't feel like they've gotten great service.
Bottom line, there are other places sushi nearby to choose from that have food which is just as good, at around the same prices and with better service. Do the math.