Normandy Farm Family RV Park is one of the best of the best in the USA. It is located easily off RT 495 and not far off Rt 95 in Foxboro MA.  It has all amenities one would want, kids are safe and lots to do.  They have a small fishing pond, a number of pools, hot tub etc.  Lots to do around the campground like a casino in the next town, Gillette Stadium down the road, cranberry bogs and so much more to do around the campground including a discount shopping center in Wrentham MA.  The management is by one family and they keep the campgrounds impeccably, they are right on top of problems and the problems are solved very quickly if there are any problems at all.  The sites have some distance between sites and staff want to help in every way they can.  I have stored my rig with them for 21 years and never a problem and do camp there when I get a chance.  They do charge more than some campgrounds but they give you more than any campground I have stayed at.