While most items are marked GF and the staff is knowledgeable, be sure to ask and let them know you require GF, because there are a couple items On the menu where the labeling is ambiguous. For instance, the spring rolls are gluten-free, however the sauce that they come with typically is not. Just ask and they will provide GF sauce though. Otherwise the choices are numerous, and the pho is quite good, especially the roast pork (get extra mushrooms). Generous portions for a reasonable price as well.
This place is great! Instant favorite. Never had pho before, so no idea how 'authentic' but the bowl I got was extremely fresh and tasty. The menu is well marked with what is gf (basically everything) the only thing to watch out for is the bottle of tamarind sauce on the table.