I have been to Hue twice now, ordered different things both time, and was impressed by the quality of the food as well as the quality of service. Hue has a nice, clean if not fairly small dining area.
The first time I visited Hue, I ordered the Cơm Xà with tofu, which is a spicy stir-fried dish served with rice that was bursting with flavor. I wish I could be more specific, but this visit was actually a while ago at this point, and I can't recall which vegetables were in the dish. I just remember it being fairly spicy and very delicious.
The second time I visited Hue, I ordered the Vegetarian (and Vegan) Phở. I added all of the included garnishes (bean sprouts, Thai basil, jalapeno, and lime) as well as a healthy dose of Sriracha (I love my food extremely spicy). The soup was good on its own without the added garnishes, but even better after I embellished it a bit. I found the portion size of the soup to be more than adequate (it was in a huge bowl), so I'd be intrigued to see what the "extra large Phở" is that they have available for an additional $3.50.
To be honest, I haven't tried many other Vietnamese restaurants in town, so it's hard for to say how Hue stacks up, but I thought it was delicious and I am very happy that they offer a vegan Phở, which not many other places in town do.