Sushi Bune is a restaurant underground. At first it seems like you're walking into a dirty basement. However, when you enter the restaurant you are greeted by waitresses who speak some form Korean/Japanese.
The items on the menu are cheap and well priced. But their service is not so great. They often put me and my friends near the back near the kitchen or the bathroom, which is gross and unappealing. Also the waitresses take a really long time to get things if you request them (such as water), even if there are a lot of people or if there are not a lot of people.
I come here often because of its close proximity to Downtown SF shopping and because of its price. I don't come here for its service, and I wouldn't expect others to expect the best here for that... just a quick, good, filling, large-portioned meal.