I recommend that you order take out for Kazu, unless you like not having much space when you eat and having to eat quickly and then leave.
The food is good, especially the ramen, which is only offered during lunch. I think that the ramen and the 48 hour pork are the dishes you must order when going to Kazu.
Service is efficient, waiters are really nice and polite, and even though the wait can be long at times, I think it is still worth it to go and eat inside at least once.