i belive this is the closest one and its not all that bad
although im not quite sure what they charge for a room per night as its not on their web page
You can also check out the Red Robin Motel, which is headed towards Charlestown; I believe the below info is accurate:
402 Old Claremont rd. Charlestown, NH 03603 - (603) 826-9780
Open Daily 8:30am-10pm