Every once in a while, you stumble upon a restaurant that you really like but critics ignore and no one else knows about. A few weeks ago I was led to a small, almost unseen vietnamese restaurant nestled in Tribeca between much more famous neighbours. We could see Bouley from our window, and Nobu, Megu, Chanterelle and a dozen critical raves were staring over our shoulder, but our quiet little place held its own. Not unlike Vietnam itself, one might say. Hoi An , named after a once-famous port town in Vietnam (ok I googled that) is small, unpretentious, inexpensive and strangely enough staffed by small cheerful Japanese women. There is no easy way to discover Hoi An. I was taken there by a friend, and that's probably the only way to go; on your own you'll almost always get distracted by one of the much better reviewed neighbours that abound in Tribeca. That would be a mistake, though - the food there was some of the best Vietnamese I've had in recent times. We ordered the ...