The place is actually pretty good
The name of the sushi bar is Wabi Sabi. I know the owner (Lydia). Yes - she is very difficult to work with: but, she is also a fanatic about the quality of her food. I've personally seen her give an assistant chef hell for not preparing a plate properly.
I think that the owner's "difficult" personality is what causes the restaurant to be so good... she won't compromise.
Anyway - I've eaten there many many times and I like it. Try the Carpacchio of Tuna - if you are a sushi lover, it's something different.