The atmosphere is okay. Not too loud and simple.
The food has never impressed me. I've come here many times over the past few years due to friends wanting to try it and it's location. Ha long bay is always super salty. The dishes need salt to make up for lack of flavor. If you want good pho around here, go to Saigon noodles. For food, go to Saigon noodles or Sa Bai Thong, which is a little more Americanized but still great and worth the price.
I once asked for rice noodles instead of egg and the waitress charged me $2 without letting me know which was annoying. The service isn't great but it's not bad either.