The 2003 reopening of this historic resort was a major event; it’s now one of the top resorts in New England. The photogenic grand hotel, which opened on New Castle Island in 1874 but later shut down, was refurbished by the owners of the Samoset (p. ###) and is operated jointly with Marriott in professional, luxurious fashion. As befits a grand old hotel, the main building’s rooms vary in size, but most are spacious with good views of ocean or harbor; particularly interesting are the suites occupying the three turrets. Some rooms have gas-powered fireplaces or private balconies, while all have luxury bath amenities, new bathroom fixtures, and lovely detailing and furnishings. (Families might appreciate that many contain two queen-size beds.) Downhill, a set of luxury suites beside the marina are truly outstanding, with water views, modern kitchens, and marble bathrooms with Jacuzzis. A full-service spa offers a range of treatments and body wraps.