We had our first dinner there while staying at the St. Francis and it was terrific. I am a fan of Japanese food, but Chuck had to be in the mood for it.
I ordered Edamame for starters, and between the 2 of us, we polished off the entire plate. Edamame are boiled soybeans in their pods, which are lightly salted and served as an appetizer. Great stuff, and in most cities, I'd say you can find them at green grocers. This was followed by avocado maki rolls which also disappeared fairly quickly. We had udon soba with slices of pork and brown rice which was served with soup broth which I emptied into the bowl of rice. The whole thing was quite tasty and took care of our appetities very adequately.
The restaurant is quite small and simple, but the food is fresh and prepared as you wait. If you are in a hurry, don't order anything hot, or skip this place alltogether. San Francisco, most likely, has the greatest number of Japanese and Thai restaurants per square foot than any other city. They had green tea and vanilla ice cream for dessert but we skipped.