Visit here at least once on every trip to Viet Nam. Small restaurant recently been renovated and air-con'ed with flat screen TV.
Staff will speak no English unless the owner himself is there.
Menu has no English either.
Has Vietnamese dishes to include noodle soups and rice plates. Nothing fancy, just your normal dishes for the common working class Vietnamese.
Very cheap and excellent tasting.
Will probably be a challenge to order if you don't speak Vietnamese, though.
As far as food goes, this is definitely a 5, but it gets a 3 since it will be hard for a Foreigner to order (I am Vietnamese).
Cons: No English Spoke, No English Menu, No pictorials on Menu.