About Us StoneRidge is a premier resort-style senior living community in Mystic, Connecticut. Just 2 miles from downtown Mystic and set on 32 beautiful acres, StoneRidge offers an incredible variety of on-site amenities and activities. Because StoneRidge is a Life Plan Community, as your needs change you’ll be able to seamlessly transition from independent living to assisted living, skilled nursing care or memory care at our on-campus Avalon Health Center.