Great Island Inn

A modern, apartment-style inn located in New Castle, New Hampshire At Great Island Inn we offer twelve modern guest rooms and apartments for the independent traveler in mind. We are housed in two freshly-renovated, historic buildings on New Castle island. Ten of our studio, 1BR and 2BR apartments feature fully equipped kitchens and in-room laundry. Whether you need a home base while visiting the Portsmouth area, are in town for an extended work trip, or are doing home renovations, we invite you to experience New Castle and the Seacoast like a local!