Sauce was recommended to us by a client in upstate New York. Since we support local businesses we decided to check it out. It was a great find. I don't know San Francisco well but it appears to be near the Civic Center and Theatres and would be a good choice for a dinner before a show or desert after. The menu had lots of vegetarian choices, as well as regular and the meals were well presented. Service was fast.
I would go back there again if my travels take me that way.