Its small, it looks a bit rough the first time you go in, but it’s awesome. They are clean, great food, and super service. The fish is very good quantity and the guys really know their stuff. Their miso is really nice, the beef tataki is simply the best anywhere. They are open till late and the staff is super friendly. I travel a lot and visit SF a few times a year, and eat here every time I can. Outside Japan this is my favourite Sushi restaurant.