Yes, based on the name you'd assume it's typical Vietnamese food; Pho, spring rolls, banh ceo (rice flower pancakes with varied bits of food added) tom yum soup, etc. And it has all of these things, and more, and they're all very good. The banh ceo is particularly good and the spring rolls can be ordered with shrimp or BBQ pork (which we prefer).
But the star of the restaurant might be the sushi. All of the usual types of sushi are available but, as in most sushi restaurants, it would serve you best to let the chef choose for you. Chef Hong is extremely creative. His sushi is already flavored with several of his sauce creations and we never found a need to add soy, wasabi or ginger to his creations. His fresh squid salad is not the typical Japanese sesame cooked squid type, it's fresh squid and delicious.
If there are non-sushi eaters in your group, there's more than enough excellent cooked food but, if you love sushi this might be the best spot in Tucson. It is on par with sushi restaurants in Los Angeles and New York, though the atmosphere is decidedly of the strip mall / chopsticks in a paper sleeve decor.
The food is very reasonably priced, this is a $15 per person experience UNLESS you order the custom sushi. If the chef prepares it, you will likely be in the $50 per person range; cheap in NY or LA, a bit expensive for Tucson. But it is well worth the price.
One complaint; the sake could use some help. It's bag-in-box (or at least tastes like bag-in-box) so I just order the beer.