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Wentworth by the Sea, A Marriott Hotel & Spa

588 Wentworth Rd.  New Castle  New Hampshire  03854  USA 

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(proof of eligibility required at check-in)

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To make reservations by phone, dial freephone 0800 221 222 in the UK, 1 800 409 929 in Ireland, or view our regional telephone reservation numbers.

You won't regret staying at our luxury New Castle hotel

Wentworth By the Sea, A Marriott Hotel & Spa commands the island of New Castle, one of New Hampshire's oldest settlements. Masterfully blending historic elegance with 21st century convenience, our luxury hotel provides a memorable backdrop for business conferences, family vacations, and romantic getaways. The Wentworth features 161 elegant rooms and suites, brimming with luxury perks; many showcase ocean views. Intimate restaurants with imaginative cuisine, pampering spa services, indoor and outdoor pools, fitness and business centers, and wireless Internet are all yours to enjoy during your stay here in New Castle. If you're hosting an event in the Portsmouth area, our hotel offers 10,000 square feet of flexible space and expert planning services. And there is no shortage of wonderful things to do here in New Castle and the surrounding area - from visiting Water Country to exploring historic downtown Portsmouth. A grand resort experience is yours to enjoy at Wentworth by the Sea, A Marriott Hotel & Spa.

Key Amenities

  • Spa
  • Fitness center
  • Pool
  • Kitchen/kitchenette

Map & Local Area

Marriott Rewards

Category:9· Points Needed Per Night


  • We're the winners of Marriott's Hotel of the Year and TripAdvisor's Certificate of Excellence, as well as a TripAdvisor GreenLeaders program member.
  • Indulge in a luxury spa day during your New Castle vacation. Located here at the hotel, the Spa at the Wentworth features a wide range of treatments.
  • SALT Kitchen & Bar, our newly reimagined dining experience, delivers bold New England flavors in a contemporary and relaxing restaurant environment.

Guest Rooms

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