Rarely available in the sought-after Harbourside neighborhood of Caloosa Yacht & Racquet Club, this exceptional waterfront residence offers the Southwest Florida lifestyle buyers are looking for. Situated at the end of a quiet cul-de-sac, this 3-bedroom, 2-bath home features approximately 2,200 square feet of living area, a spacious great-room design and beautiful water views from the moment you step inside. The expansive screened outdoor living area is the centerpiece of the home, with a private pool and integrated spa overlooking the lake and providing a wonderful setting for relaxing, entertaining and enjoying spectacular Florida sunsets. An especially important feature for Southwest Florida buyers, this property has never flooded, offering added peace of mind. Additional highlights include a new HVAC system completed in 2026 and a whole-house generator. Caloosa Yacht & Racquet Club is one of South Fort Myers' hidden gems, offering residents access to a private 56-slip marina with direct Gulf access, the acclaimed Blue Coyote restaurant, a community pool, tennis courts, fishing pier and a beautiful four-acre waterfront park with kayak and canoe storage. Lawn maintenance is also included, allowing more time to simply enjoy the lifestyle. With its waterfront setting, private pool and spa, no history of flooding, boating amenities and outstanding location just minutes from shopping, dining, beaches and the islands, opportunities like this are increasingly hard to find. 9860 Mainsail Court is a home you will want to see before it's gone.