I went on a Friday night around 8 and the place was packed and we had to wait for like an hour! I had the vegetable broth ramen with chicken, it tasted pretty good. It's a great place to take a date to because of the warm ambience. I cant say much about the authenticity of this place since i haven't had a lot of Japanese food.
Update: the pork broth ramen is very good. Thick broth. But they do not offer thick noodles after 6pm