Food - In terms of taste and authenticity, I would say it's pretty bang on. There are 1-3 items that are not super fantastic, but that's a given anywhere. The selection is quite good, ranging from kobe beef to grilled saba and tan-tan noodles. The drink menu offers quite a few choices as well.
Service - They are always quite accomodating to their patrons. Usually you are always greeted right away, you are given a hot towel when you first sit, and they even make sure to open the door for you once you leave. The servers are quite friendly and can get quite out going given the right topic of conversation. Some people might say that some of the servers are lacking with their english abilities. I can understand how that's fraustrating for others, which is why I took off 1 point.
Value - It's an Izakaya place, let's not kid ourselves. You don't come to an Izakaya place and expect to pay $15-$20 /person. I don't see a problem with spending $50-$100, though others don't see it that way. The idea is to have 3-5 dishes, some drinks to compliment each dish, and share with your group. Simply put, it's a tapas place.
Ambience - I rather like the decor, despite some of the reviews here. The place is always clean, including the washrooms. We had talked to the floor manager about the decor the other night. He said the owner was the one who came up with the concept. Most of the ideas and design is something you would see in Japan.