I'm conflicted on this place, because the food is good but the service is a bit lacking, especially for the price. I'd probably actually give it 3.5 stars, but I rounded up since they're kind of new and the food was fresh.
Be warned that for the price, the Don bowls are not really worth it. Their sushi rolls and their lunch bento are great though, and I would go back for those. The servers took a while to get to us, but everything tasted fresh, and I was given good recommendations. The unagi is quite good even though it is pricey. They were not yet serving ramen when I was there, but I would go back to try it. They also only serve bento during lunch, so be warned about that.