Visit Daruma for quick and very pleasant service and very good Japanese. It's "hole-in-the-wall" catch that you'll be glad to put in your repertoire.
The focus here doesn't seem to be sushi, although they do a great job with sushi if that's what you want. The menu is pretty interesting actually (but not crazy) with many tapas style dishes, very nice ramen soups, and surprisingly tasty teriyaki chicken. These are the things I tried. And I was impressed with it all.
The owner and chef(s) are friendly and seem authentically pleased to have served you. The servers are extremely attentive and also seem happy to serve you.
It is the combination of excellent service, interesting menu, happy chefs, and (as it turned out) very affordable price that makes Daruma an absolute winner.
(Note: I believe there has recently been a change in owners and chefs; some of the photos of menus and food may not now be accurate)