We were very happy to find Oka in order to have a change of pace from the heavier US offerings we've been having on our road trip. It's a very stylishly and expensively fitted out place on Harrisburg Ave. We went for a Monday night dinner (when it seems quite a lot of Lancaster's better restaurants are closed)
Our meal was simple - salmon and tuna sashimi, natural oysters with a delicious citrusy vinaigrette' and a very tasty stir fry of beef with numerous vegetables and their "special sauce" accompanied by brown rice (craving healthy!!!!). Couldn't have been happier with their food.
Their bottled beer (including Heineken) came in at $3 each and they had a good range of wines by the glass at a very reasonable price. Another tick!
Their greeter left quite a lot to be desired in terms of customer focus - not especially friendly or interested - didn't look up from her phone to say goodnight either. Our waiter was lovely and friendly but not well trained. He brought our entree dish (Australian main course) before we had even finished with our appetisers (Australian entree).
Overall though I would strongly recommend Oka and would go back.