This exceptional 4BD/2BA townhome in Portsmouth's desirable Little Harbour neighborhood features original wide pine floors, crown molding, and new designer finishes throughout. Built in 1870, this home has been lovingly renovated and kept beautifully updated. The sun-drenched first floor showcases a living room with soaring ceilings and gas fireplace, elegant dining room with custom built-ins and a second fireplace, and the chef's kitchen with premium stainless appliances and quartz countertops - all flowing to an enchanting sunny porch with panoramic views of the unusually-large stunning private garden nestled behind the house. The second floor offers a custom marble-topped full master bathroom featuring spa-like finishes, double sinks, and convenient hidden washer/dryer, plus a second full bath with classic clawfoot soaking tub. At the top of the hidden third floor staircase await two additional cozy, private bedrooms and abundant closet space. The updated house systems, partial-finished large basement, and whole-house water filtration with reverse osmosis drinking water will keep you comfy all year long. Modern amenities include a Nest smart system and radiant heated floors in both bathrooms - perfect on a chilly winter morning! Outside, your private oasis awaits with a fully-fenced backyard perfect for entertaining - or pets! Unbeatable location - close to downtown, parks, Music Hall, shops, and schools. Pet-friendly!