As one of the biggest fans of Oishii ever, for the past few years (I LOVE this place)... it was disappointing to arrive Saturday night at 5:40p JUST before the dinner onslaught...and be ignored by the hostess (owner's daughter, I think?) and waitstaff for 5-10 minutes as 3 tables for 2 (our size) sat empty and ready. We were eventually seated close to the back door (that was unlocked and opened frequently, providing an artic blast each time...don't recall this ever happening before -- seems it's usually locked and the line forms only at the front door by the hostess stand).
The (relatively new?) server was friendly, but it took a while to get drinks and place our order. The shumai ordered was delivered as gyoza instead (politely replaced when pointed out).
Of greatest concern, however, was that the sushi and maki assortment we ordered, while as fresh as ever, was very sloppily cut and assembled -- we debated whether to send back the disintegrating maguro nigiri and paper thin sake nigiri, and the messy pile presented as Geoffrey's roll was a true disappointment.
Our only hope is that it was one, very isolated off-night. It seemed like an adequate, very average Japanese place for the first time ever to me.
The chef-owner and his wife did not appear to be around this night, and the faces behind the sushi bar were not familiar -- I hope the reported South End expansion won't allow their previously high standards to lapse.
By the way, I would have spoken up on site, but there didn't seem to be anyone in charge to talk with...if I can find an email address, I think I'll send a personal note to the chef.