Hotel Info:
Marriott Courtyard in Foxboro (800) 321-2211 or (508) 543-5222.
Holiday Inn Mansfield
Residence Inn by Marriott

Nearby discount hotels:
Comfort Inn, Mansfield
Red Roof Inn, Mansfield 

Local Hotels from Google Maps if you don't mind traveling a little more. 

There is room for campers and camping as well but there are no hookups or facilities.