Ellacoya State Park Ellacoya State Park is located in Gilford on the southwest shore of Lake Winnipesaukee, New Hampshire's largest lake. The 600 Gilford, NH State Parks Cherrystone Lobster House Gilford, NH Other Attractions William H. Seed, broker Gilford, NH Other Attractions Ellacoya Resort & Cottages Gilford, NH Businesses Adventures in Advertising Gilford, NH Other Attractions