YNK isn't the best speakeasy, but I'll put it on the list. It just barely skirts in, even though it's not incredibly well hidden.

Inside the Irvine Marriott you'll find it. It's not too hard to hunt for, they do have signs out front. But it's cute, it's small, and the drinks are good.

YNK stands for you never know, and there appears to be a very light nautical theme. I had a good time, but there are definitely sexier establishments out there.