Set within one of South Katoomba's most tightly held enclaves, Sentosa Retreat presents a rare opportunity to secure a residence of exceptional scale, versatility, and refinement. The home reveals a thoughtfully designed layout tailored for both luxurious living and premium accommodation. Currently curated as a premium holiday retreat, the residence unfolds across an expansive and versatile floorplan, comprising five beautifully appointed bedrooms, three and a half bathrooms, and an additional bathroom within the pool house. Refined living spaces include a formal lounge and library, alongside a light-filled open-plan domain featuring a designer kitchen with butler's pantry, adjoining dining area, and relaxed family living zone. Appointed with chevron-laid timber flooring, marble finishes, custom cabinetry, and a temperature-controlled wine cellar, this central hub seamlessly extends from bi-fold doors that open onto an extensive outdoor entertaining terrace and beautifully landscaped gardens, complete with a newly paved terrace and new 8-metre bounce court, creating a refined indoor-outdoor lifestyle experience. The palatial primary suite is a private sanctuary, complete with bespoke his-and-hers dressing rooms, an opulent marble bathroom with freestanding soaking tub, underfloor heating, and an elevated deck overlooking a tranquil fishpond. Complementing the main residence is a fully self-contained guest or accommodation suite, privately positioned above the indoor pool. This retreat offers a separate lounge, bedroom, kitchenette, and a luxuriously finished bathroom-ideal for extended family, guests, or continued short-term rental use. A defining centrepiece of the estate is the exquisitely designed pool house. Crafted with whitewashed Oregon and pine timbers, the space frames a striking indoor heated magnesium pool lined in deep blue mosaic tile. Enhanced by a brand new sauna, bathroom facilities, and expansive steel bi-fold doors opening to the garden, this resort-inspired setting delivers year-round indulgence. Meticulously appointed throughout, Sentosa Retreat showcases an exceptional array of bespoke finishes and modern conveniences, including an internal laundry, recessed automated blinds, central heating, Jetmaster gas fireplace, Velux remote skylights, solar energy system, elegant steel French doors, and the potential to reinstate two off-street parking spaces, ensuring comfort, sophistication, and practicality at every turn. Surrounded by the natural beauty of the Blue Mountains, the property is positioned approximately 900 metres from the iconic Echo Point Lookout and the renowned Three Sisters, with an array of scenic walking tracks and lookouts at the end of the street - placing an enviable balance of tranquillity and amenity right at your doorstep.