Green Room seems to be a place that is popular with students and I can see why. The atmosphere here is very nice, the food is cheap and delicious and the alcohol is reasonably priced.
Green Room is of the same family as The Red Room and Nirvana so if you've been there you have some idea what to expect. Mismatched tables, interesting art scattered on the walls and dim yet pleasant lighting. Unless it gets too crowded Green Room is a very comfortable place to eat and drink.
The food is probably the best part of this place. For a very low price (most dishes are below $5!) you can get a very good meal. My personal favorite is the spicy, pho-esque "Viet Soup". The only food item I've found lacking is the nacho plate, which is passable but bland. The beer at Green Room is not the lowest price I've found, but it's not bad either.
My main problem with Green Room is the very slow service. Considering how popular the place is, you'd think they'd hire a couple more people, but often I've found it taking a very long time to order or even to pay.
Despite this though Green Room is still a fun place to go, especially if you want a good meal to go along with your drinks.