Tucked at the end of a quiet cul-de-sac in Mission Viejo's desirable Castille neighborhood, this beautifully updated single-level home offers four bedrooms, two bathrooms and 1,640 square feet of light-filled living space - all set against sweeping hill and mountain views. The inviting interior features stylish flooring, a spacious living room with a fireplace and direct backyard access, plus a dining area that flows naturally into the kitchen. Framed by a picture window overlooking the scenic backdrop, the refreshed kitchen features gray shaker-style cabinetry, quartz countertops, a translucent glass-tile backsplash, stainless-steel appliances and recessed lighting. The generous primary suite enjoys backyard views, mirrored wardrobe doors and a private en-suite bath, while three additional bedrooms provide flexibility for guests, a home office or hobbies. Outside, an expansive paver patio, lawn, raised planting beds and private in-ground spa create a peaceful retreat for relaxing and entertaining. Seller-owned solar with two storage batteries, a whole-house fan, central air and an attached two-car garage add comfort, efficiency and convenience, while a whole-house plumbing repipe provides added peace of mind. With its single-level floor plan, cul-de-sac setting, stylish finishes, private spa and memorable views, this home brings together the features Mission Viejo buyers value most.