I just made my hotel reservations.

The Hampton Inn has only 2 in the ITG block available.
I was out of luck on any closer hotels.

I have a full week reserved at the Clarion Hotel 1 Atwood Dr, Horthampton for $79.00 a night. It covers me from May 27 to June 3.
I will be a tourist for the non ITG days. There is plenty to see including a trip to Boston on Monday. (One if by land and two if by Sea, I think.)

I have rented a car. It is a compact but I could probably help with a car pool.