well.... i filmed a good deal at Ponkapog, south of Boston. I'm sure there are places like this all over. It IS a big lake, sourrounded by woods. I think it's state property. Anyway, cabin rentals are like $15/day. We filmed outdoors, but they let us base our filming out of a cabin for free. Just look around for places like this. I'm sure they're everywhere. I knew of via word of mouth though.