Pretty darn good! I've been frequenting this place for the last 3 years or so and I think that the pho is up to par. I do have access to excellent pho in Philly's Chinatown section on a daily basis, and Bamboo does a pretty good job.
I usually do takeout, but have dined there once for lunch and once for dinner. It has never been crowded when I'm there, but I think they do a brisk take out business.
My hubby gets the Beef Stew Noodle Soup, which has a tomato base and is spicy. He loves it! Bamboo also makes and sells their own spicy chili sauce (akin to Siracha, but much spicier and with red chili slices). I am usually boring and order the same dish--the Chicken Pho--but I always like it. I have also had the vegetable noodle soup, but I think the chicken pho is more flavorful. The Summer Rolls are quite generous. One summer roll and a bowl of soup, and I'm done for the night.
It is also an excellent remedy for a head cold/flu. A solid place to grab a warming bowl of soup and a no-frills, inexpensive dinner.
Closed on Sunday!