Average pho at best.
I'm not sure why the restaurant is always packed. It must be mostly because of the convenient location and quick service. I find the broth to be fairly bland. Admittedly, I find myself adding extra sriracha, lime and basil to compensate for the lack of flavor. I also find the noodles to be a little too soft and would prefer them to be more firm. Perhaps I came on a bad day? The good thing is that the broth isn't too salty or MSG-laden (in my opinion) and the meat quality is decent.
Their fried spring rolls are pretty pedestrian, but at least they are served nice and crispy. My go-to Vietnamese drink is the Che Ba Mau (3 color drink) and Pho Hung makes a passable one. Overally, I feel there are defintiely better Vietnamese options in Chinatown. I prefer Pho Xe Lua's noodles and broth and I wish Pho Kim Bo was still around the corner. Overall, not a terrible place to grab a quick pho, but not a great place either.