I eat here from time to time, but its simply out of convenience/location. There are much, much better sushi offerings in pittsburgh.
I have only been to the hibachi table once or twice. It's simply bland food cooked on an indoor skillet top. I usually just ask for a booth in the sushi area.
The sushi is fresh and decent. If you're in the area and craving a bite of sushi, then this place is okay. But I haven't been blown away by it.
Avoid the tempura. It is simply bland and greasy. Not something you'd get at an authentic Japanese restaurant.
The green tea is simply served in a mug with a tea bag. Which kills any other expectation of authenticity that you'd expect from a Japanese restaurant.
Usually, the servers are efficient and friendly. However, the last time I was here, we saw the busboy more often then our waiter. He left us alone for long periods of time and didn't bother to ask us how we are enjoying our meals or if he could get us anything else. I believe his name was Nick.
I've given this place a good couple of tries and I simply cannot recommend it as anything spectacular. If you're shopping in the waterfront and just have to have a sushi roll, fine, but otherwise, do yourself a favor and find a more authentic Japanese experience. Yokoso is certainly not.