The Sanctuary Beach Resort invites guests to experience a luxurious seaside escape in Monterey Bay. Nestled between the rolling hills of the Carmel Valley and ocean tides of the Marina Dunes, The Sanctuary Beach Resort enchants travelers with its surroundings, top-of-the-line amenities and world-class attractions.The Sanctuary Beach Resort invites guests to experience a luxurious seaside escape in Monterey Bay. Nestled between the rolling hills of the Carmel Valley and ocean tides of the Marina Dunes, The Sanctuary Beach Resort enchants travelers with its surroundings, top-of-the-line amenities and world-class attractions.