I've been to this place multiple times. It's a fairly small restaurant, with only about 10-12 tables and always packed around lunch time.
Why come to this place: Decent Asian food in Yorkville for cheap. Curry is delicious and they have a good selection of lunch specials (at least 15-20, they have pho, pad thai, curry and stir-fry dishes, and starting from $6 - realistically - $7 if you want something good) and you can customize the combo to add fried rice as well.
Best dishes: Green curry and pad thai.
Things to avoid: Just get the lunch special and not the combo. The soup is mediocre and the spring roll is a bit bland.
Final verdict: Great for a quick business lunch.