Discover Exceptional Waterfront Living on a Protected Lagoon in Marathon! Nestled in a quiet and highly desirable Marathon neighborhood, this beautifully updated 2,328 sq. ft. waterfront residence offers the ultimate Florida Keys lifestyle. Offered turnkey and fully furnished--with seller financing options available--this property also holds incredible potential as a weekly vacation rental. Inside, enjoy bright, open living areas featuring 4 bedrooms and 3 full bathrooms, plus a generous bonus room/den--perfect for a home office, media room, or potential 5th bedroom. The showstopping interior features a rare, one-of-a-kind indoor pool! In a truly unique layout, every bedroom features French doors that open directly onto the indoor pool deck, offering private access for family and guests alike. Step outside to 30 feet of dockage on a protected lagoon with quick access to the Ocean and Gulf. Don't miss this rare opportunity for luxury, tranquility, flexible purchasing terms, and income-generating potential!