I've been frequenting the Mint Cafe on Coventry for something like 5 years, and every visit is impeccable.
The bubble tea is outstanding, as is the tempura and soups. Their entrees never seem to miss the mark. Especially considering the reasonable cost of everything on their menu, you really can't seem to go amiss here.
Also awesome is their staff - super friendly and pleasant. I have left other restaurants in Coventry for poor service, just to wander down the street and have a perfect evening at Mint Cafe.