It's actually a really spacious restaurant for Lawrenceville. There are larger wooden tables and cast iron-looking chairs. The place is decorated in Thomas Edison-age/industrial revolution stuff.
I enjoyed a black bean burger and a dark and delicious beer. It's impossible for me to tell you what beer it was because they have literally hundreds on tap. For some reason I want to say it was Arsenal, although they're kind of known for ciders.
At any rate, it's moderately pricey but if you want to get a unique experience -- go out and spend the extra buck.