I had been here many many times now. Here is pretty much always busy during the lunch time. Usually have to wait for about 20 minutes. The ramen is good. Can't really say its the best ramen around the area. But at least you will feel pretty happy after the mean. Try the regular ramen with the lunch rice bowl. It's a good combo.
Foods here are really good and authentic. I would've give them five star rating if they are little more inexpensive. If you don't mind about budget then their food, ambience, and service are excellent. For budget conscious try Sushi Tomi nearby.
Whenever I travel to the Silicon Valley