I've been coming here for over 10 years. It was my first sushi restaurant experience back then and it got me hooked (traditional Chinese folk don't usually eat raw food so this was a big move for me at the time) . I have introduced many of my friends to sushi at the Sushi Inn.
The line ups back in the day, before the tsunami of sushi restaurants that opened since, were really long here. The problem I found was the ventilation and air circulation there was not great. The fryer is in the middle of the restaurant so your clothes, hair etc always smelled like tempura when you got home. It really helped when they opened up the downstairs section but the atmosphere was different on the lower level. So I would often choose a seat near the door but the cold winter air was not good if you sat while people stood practically on top on you while you ate.
The restaurant still has a huge draw from the Yorkville crowd. Though I don't come as often because my current group of friends are big eaters and they prefer AYCE places. When I'm in the area and craving for sushi, I still drop in. Their bento boxes are reasonable, sashimi and rolls are decent quality (a bit too much rice on them than I usually like) but I really like the dragon B... 4 star rating for me :)