I've been to Han Moto 5 times and have introduced several friends to the restaurant. I've eaten my way through the menu and have really enjoyed the food and atmosphere (even when trying to cram 4 people into the really small tables).
My only issue came most recently (Dec 21) dining with 3 friends when our server (who I hadn't seen before there) made our traditionally 5 star experience into a 3 star. She was indifferent and borderline hostile to the group which did not go unnoticed. I tweeted the restaurant on twitter and never heard anything back. I'm less inclined to go back and haven't been back since.