Welcome to 121 King Charles Drive, a beautifully maintained Colonial set on a rare, level 1.3-acre lot in one of Portsmouth's desirable neighborhoods. Built in 2000, this 2,399-square-foot home enjoys western-facing views of the West Passage of Narragansett Bay and Prudence Island, with spectacular sunsets visible from the living room, kitchen, primary suite, secondary bedroom, and rear deck. Hardwood floors, custom millwork, a striking fireplace with bespoke mantle, formal living and dining rooms, and a spacious granite kitchen with premium appliances create an inviting setting for everyday living and entertaining. The thoughtful floor plan offers four bedrooms, 2.5 baths, and a generous bonus room. The primary suite features water views, a walk-in closet with custom organization, and a spacious en-suite bath. Recent updates include refreshed bathrooms, fresh interior paint in a modern coastal palette, Google Nest thermostats, and a new hot water heater. A partially finished basement provides additional flexible space. The expansive, level backyard offers excellent potential for a pool, outdoor entertaining, or recreation, with mature landscaping and undeveloped land bordering the property for added privacy. Ideally located approximately one mile from The Aquidneck Club and Portsmouth Abbey School, and minutes from Newport's beaches, marinas, and waterfront. Convenient access to Route 24 provides easy travel to Boston and the South Coast.