Rare opportunity to own an authentic historic waterfront treasure, meticulously restored with true 18th-century finishes incorporating modern mechanics. Privately situated at the end of a small street along Portsmouth's working waterfront in the South End neighborhood, bring your boat or launch kayaks & paddle boards & watch the July 4th fireworks, from your own tidal dock. The 400 SF seasonal boat house/guest house with bath hangs over the water & has commanding views to delight guests. Marvel at the sunlight dancing & the moonlight shimmering off the water from the views in every room! The flexible floor plan offers various entertaining spaces plus a first-floor bedroom/bath option. A comprehensive to the studs' renovation in 2011; no detail has been untouched or overlooked from the hand plastered walls & ceilings, the 10' fireplace (one of 4) with 18th C. lintels & stone hearths, all flooring & staircase replaced, to the "Portsmouth" door with Rams Horn & pintle hinges. Modern conveniences include a new high-end heating system, central air, Viking & Miele appliances & Waterworks plumbing fixtures throughout including a brass soaking tub. Sip your morning coffee on the covered porch, an evening beverage on the waterfront deck or relax in the peaceful Zen Garden. Take advantage of downtown with award-winning restaurants, shops, galleries, theaters & music venues only a few blocks away. A detached garage plus off-street parking, this is a once in a lifetime opportunity!