4 Mariner Way presents a rare opportunity to own a newly built, expertly designed four-bedroom main residence with a separate one-bedroom guest house offering water views—all in the heart of historic Nantucket. Located within an exclusive enclave of just five homes, this property provides convenient access to Main Street, the Great Harbor Yacht Club, Monomoy’s scenic creeks, and the in-town bike path. The thoughtfully designed guest house is a private space for visitors or a quiet retreat, making this an exceptional opportunity to enjoy Nantucket living in a coveted and convenient setting.