Not the place to go for authentic vietnamese food. The atmosphere is more of a cafeteria style where you order your food at the counter and they bring it to you. The service is really fast and its great for quick lunch/dinner.
But the spring rolls are pricey, and they miss the 2 most important ingredients: mint and cucumbers!
The vermicelli noodles are mediocre. I would recommend their pho if you want the most vietnamese style food.