For years I was fooled by this restaurant's nondescript yellow exterior. The inside is clean and well maintained with small touches of oriental decor---nothing exquisite, though certainly adequate.
Tonight I had the Philadelphia rolls and vegetable yakisoba. (I was a little disappointed this order doesn't include miso soup.) The yakisoba seemed a little heavy on grease and sauce but tasted fine. Although prices appeared reasonable, portions were tiny and barely satiating.
Service is good. Our waitress tonight was friendly and attentive, and based on my past experiences here, this tends to be the norm.
There's really nothing wrong with Yellowfin---it's very much a hidden gem and one of Champaign's top spots for Japanese cuisine. That said, nothing about this restaurant strikes me as exceptional, so I'm going to go with a solid four out of five stars.