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 DK Net Design Gilford, NH Other Attractions Nadia's Trattoria Authentic Italian Cuisine Gilford, NH Businesses Sawyer's Dairy Bar Gilford, NH Other Attractions Four Stroke Marine Gilford, NH Other Attractions