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Properties

Explore over 350 member properties ranging from the smallest New England country inns to the most exclusive hotels and resorts, state by state.

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Experiences

Experience the landscapes, activities, history and culture that sets New England apart. Make memories that last a lifetime.

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Sea Crest Beach
Greyfinch Chatham Inn, Chatham, MA
Samoset Resort, Rockport, ME
Relaxing lounge with wooden furniture, ocean view through large windows.
Inn by the Sea Porch
XV Beacon, Boston, MA
Rooftop table with drinks and plates of food, overlooking a cityscape at sunset.
Trapp Family Lodge
The Revolution Hotel, Boston, MA
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Sea Crest Beach

Inspiration

Experience the landscapes, activities, history and culture that sets New England apart. Make memories that last a lifetime.

Why New England
Rugged and rocky coastline
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Hexagonal collage of travel scenes, beaches, and drinks.
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Small boy running off of a diving board above a lake
Scenic view of fall foliage in the mountains with a solo hiker
Why New England
Rugged and rocky coastline

Weddings & Meetings

Woodstock Inn Team Building Event
Wedding Couple at Mountain Top Resort
Meeting Room at Chatham Bars Inn
Woodstock Inn Team Building Event
Wedding Couple at Mountain Top Resort

Offers

Planning the perfect New England vacation is easy with our exclusive offers. From family-time to romantic getaways, from the mountains to the beach, find the perfect trip anywhere in New England with a few extra perks.

See all Offers
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Pride Getaways
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Family roasting marshmallows around a backyard firepit.
Cozy bar scene with two people chatting at the counter.
Spa room with two massage tables, comfortable chairs, and a fireplace. Ocean view through windows.
Two hikers with backpacks near a forest waterfall.
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Pride Getaways

Treadwell Mansion

Portsmouth, New Hampshire

A Historic Mansion in the Heart of Portsmouth

Book Now Visit Website 603-766-3476 ext. 112
Historic brick building on a sunny street corner with clear sky.
Historic brick building with a "Treadwell Mansion" hotel sign in front.
Elegant living room with blue sofa, ornate mirror, plants, and floral rug.
Cozy bedroom with a wooden bed, peach cover, and pale curtains.
Modern bathroom with glass shower, vanity, and towels on rack.
Hotel room with bed, TV, two chairs, and kitchenette.
Modern bathroom with a glass shower, blue accent wall, and white towels.
Stylish kitchen with wood cabinets, modern appliances, and marble countertops.
Rooftop patio with wooden tables and chairs, overlooking city buildings at sunset.
Brick building with green window awnings and stone wall, streetlamp in foreground.
Historic brick building on a sunny street corner with clear sky.
Historic brick building with a "Treadwell Mansion" hotel sign in front.
Elegant living room with blue sofa, ornate mirror, plants, and floral rug.
Cozy bedroom with a wooden bed, peach cover, and pale curtains.
Modern bathroom with glass shower, vanity, and towels on rack.
Hotel room with bed, TV, two chairs, and kitchenette.
Modern bathroom with a glass shower, blue accent wall, and white towels.
Stylish kitchen with wood cabinets, modern appliances, and marble countertops.
Rooftop patio with wooden tables and chairs, overlooking city buildings at sunset.
Brick building with green window awnings and stone wall, streetlamp in foreground.
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Property Overview

Experience modern historic luxury at Treadwell Mansion. Located in the heart of downtown Portsmouth, this boutique property blends the character of a restored historic mansion with the convenience of modern technology. Designed without a traditional front desk, Treadwell Mansion offers a seamless guest experience through digital check-in, secure contactless access, and responsive guest support whenever needed.

Originally built around 1765 by Charles and Mary Treadwell, the Jacob Treadwell Mansion was once a prominent Georgian brick residence and civic landmark at the corner of Middle and Congress Streets. Its elegant halls welcomed notable figures including George Washington and the Marquis de Lafayette. Today, Treadwell Mansion honors that rich history while providing a comfortable, contemporary stay in one of New England’s most charming coastal cities.

Whether you're visiting for a romantic getaway, a weekend of exploring Portsmouth, or a business trip, Treadwell Mansion offers a unique blend of historic ambiance, thoughtful design, and modern convenience.

Rooms

Thoughtfully designed to honor the mansion’s historic roots, Treadwell Mansion's guest rooms and suites combine timeless architectural details with modern comfort. Restored features, original character, and elegant design elements reflect Portsmouth’s rich heritage, while contemporary amenities create a seamless and relaxing stay.

Each room offers a unique blend of historic charm and understated luxury, featuring curated furnishings, digital access, and modern conveniences tailored to today’s traveler. Whether visiting for a weekend escape or an extended stay, guests can enjoy a comfortable retreat where the character of the past meets the ease of modern living.

Location

Treadwell Mansion

93 Pleasant Street
Portsmouth, NH 03801
United States

Directions

Phone: 603-766-3476 ext. 112

New England Inns & Resorts Association Gift Cards are redeemable at over 300 lodging properties all over New England and are available in the amount of your choosing. It’s the perfect answer to all your gift-giving needs.

Buy Now

Planning the perfect New England vacation is easy with our exclusive offers. From family-time to romantic getaways, from the mountains to the beach, find the perfect trip anywhere in New England with a few extra perks.

View All Offers

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Amenities

  • Digital Check-in
  • Secure Access
  • Responsive Guest Messaging