My boyfriend and I stopped in for dinner. He is a huge fan of Benihana and I have never had any sort of teppenyaki before so we decided to give it a try. On a Tuesday at 5pm, we were both surprised that there was only one other patron in the restaurant. The staff was incredibly attentive - our glasses were rarely even close to empty and they checked on us fairly regularly. We also received complementary edamame as an appetizer and coffee cake as a dessert. Both were absolutely delicious. Our main meal was of decent quality - if the portions had not been large, it would not have been worth the cost (which is similar to Benihana). I did, however, take home enough food for lunch tomorrow which made it worth it in my opinion. We did not order any alcoholic beverages but a quick glance at the menu showed a decent selection of beer and wine, all for a very fair price, especially if you go during happy hour.
Overall, I wish I could give 3.5 stars but given that the staff went above and beyond, I will round up instead of down. I would certainly consider going back - again, the cost v. quality is the only reason I would overlook Osaka.