What are the best cheap restaurants in the Cambridge/Boston area?

-Me and my sister are spending a day in Boston however, our hotel is in the Cambridge area so we wanted to know what are some good cheap restaurants (like a pizza place or a burger joint, or someplace where we can have good lunch.) Preferably, we would like a place around Cambridge so we can stay near our hotel.Try this website to search for the best restaurants in the area:

http://www.restaurant.com/index.asp?prti鈥?/a>

You can purchase a $25 gift certificate for $10!

Just print and go...

Hope this helps!
really just anywhere- look around it adds to the experience :)