They have good food especially grill chicken, seafood noodle soup but the service is terrible. I ate there in summer 2007 and came back in summer 2008 for the same great food with hope that they would change the service behavior. I was wrong and will not come back again. If you are looking for vietnamese authentic food with good service, I would recommend the Saigon #1 restaurant. The Pho 79 reminds me the Pho 75 in Rockville, Maryland: good food ... bad service. The waiters don't know how to treat customers. They didn't even throw a smile to welcome you or even say good bye.
Pros: Good food
Cons: Bad service