Baltimore
Baltimore is pretty affordable so there are good AirBnB options and hotel options for anyone who wants that. Also all floor space is free at our house. We only have enough blankets for like 6 people, so plan to bring a sleeping bag or double up with a buddy! People who have graduated from college in the last 5 years get priority for free floor space, let me know if this is your plan so I can get a head count and which nights you plan to stay.