I am planning to throw a get together for my girlfriends 30th birthday. I know she would really enjoy it if our closest friends and family got together at a classy place in Boston for the evening. One thing I'm struggling with is what place is classy, yet sort of known for renting out a function room where I can order large amounts of food at my cost but people will be able to order dinner for themselves as well? Has anyone thrown or attended something for ~15 and 20 in the city like this? I would love to hear any ideas people have. I am also not tied to the approach of renting a room or anything like that. I really just want it to feel nice and not be either stuffy or cheesy.