I've brought multiple groups of guests to Goji because they have a great variety to serve most everyone.
My favorite vegan dish is the tofu lemongrass bun (soft noodles) -- be sure to ask for your tofu to be steamed instead of fried, because they fry meat on the same grill. I also love the woodear mushroom dumplings (I forget their actual name, but it's an interesting vegan appetizer). The pho, of course, is also a good vegan option.
This place can get crowded --I usually prefer to go for lunch, but I recommend reservations. Sometimes there's still a short wait. Still, the staff is pleasant, despite being busy. I find the knowledge of veganism to be hit or miss, so just explain to be on the safe side...although the menu is pretty clearly labeled.
Bottom line: I recommend it!Pros: great food, vegan-friendly, across the street from vegan-friendly market!
Cons: a little pricey, can be busy, knowledge of staff is hit or miss