Outstanding Balboa Island 5 Bedroom, 5 Bath Duplex at a Premier Bay-View Location. Meticulously updated coastal duplex near the Village Center, offering a flexible layout with 3 bedrooms in the main home and 2 bedrooms in the rear apartment. Expanded in 1991 and extensively remodeled from 2022-2025. The Cape Cod infused main home features an open living/dining area with Dutch door entry, a newly remodeled downstairs bath, and one first-floor bedroom. Additional highlights include a front patio, 2-car garage, and side carport for up to 2 more vehicles. Upstairs offers a vaulted primary suite with fireplace and an en-suite guest bedroom. A third-level roof deck showcases Bay views. The well-appointed rear apartment, accessed via a private exterior staircase, provides a spacious living/dining area and two en-suite bedrooms. An interior connection on the second floor allows for optional use as a single residence. Recent upgrades include: new roof, new AC units, new outdoor concrete staircase, Wolf range, LG washer/dryer, motorized electric canopy, quartz counters, remodeled downstairs bath, new primary bathroom, fresh paint, and new wood floors. Enjoy idyllic Island living at 117 Marine. Inquire for summer rates.