Pleasanton has at least 6 or 7 sushi bars, but my pick is Senro (30 W. Neal St., between Main and First). Senro is my “local” sushi place, and I try to go at least weekly if I can. Like any restaurant, once you become a regular, you are recognized and treated very well, and that’s especially true for Japanese places.
The food is pretty uniformly excellent, focusing on sushi and sashimi, but also featuring a pretty standard range of Japanese cuisine (teriyaki, tempura, nabemono, sunomono, hot appetizers, and so forth). The sushi chef is able to find o-toro regularly and that’s one of my favorites, along with ankimo (monkfish liver). There is also an exceptional sake collection, with choices at all price ranges (including one for $129 per small bottle!). The sushi chef has created an unusually large number of specialty rolls as well. (My favorites are the Speed-O roll and the Shrimp Fantasy roll.) You can create your own bento box from a number of choices at both lunch and dinner.
I’m often on foot since I live nearby, but parking is usually not a problem except possibly on Friday and Saturday nights (especially free concert nights in the adjacent park — Fridays in summer). The new construction behind the building is now complete and that opened some more spaces.
The space is a converted railroad station which was a coffee house in the 1980s and ’90s, and the atmosphere is informal and unpretentious, with several televisions playing silently, usually with sporting events, and a very friendly staff. I consider myself lucky to live so close to the best sushi place in town.