During that 2 weeks, cheap doesn't exist. Last I recall, the Motel 6 that was about 5 miles away was $85 / night.
My advice would be to book something like the motel 6. Then scan *bay frequently for a condo, etc. If something pops up you like, buy it and cancel your reservation.
I've noticed that you can find deals out there right before the event. Somebody has a change of plans and can't make it and needs to sell. Nobody else will be looking / nobody else is going to make very last minute reservations, so you can get great places for dirt cheap. If you can split it with someone else, it will probably be affordable. Probably nothing will be under $400-500.
“You can discover more about a person in an hour of play than in a year of conversation” – Plato