I love this place. The sashimi is (usually) really fresh, and the prices are pretty reasonable for Yorkville. The rolls are decent here--but the real treat are the special rolls like the "Red Carpet Roll", etc. Those are fantastic.
Service is usually pretty good, though when it's busy you have to remind them to refill the tea.
The ambiance is great and this place doesn't come across as one of those cheesy Ikea bento box special places. This is a great place for a proper sit-down dinner, though reservations are important if you go on a Friday or Saturday night.