Nestled in the heart of Mar Vista, just moments from Marina del Rey and Playa Vista, 4241 Beethoven St is a masterfully reimagined 1925 Spanish-style residence that seamlessly blends timeless character with elevated modern living. Meticulously remodeled and rebuilt in 2019, this exceptional property offers refined design, thoughtful functionality, and luxurious indoor-outdoor living in one of the Westside's most desirable neighborhoods. While preserving its classic Spanish charm, the home was taken down to the studs and underwent an extensive transformation with updated electrical, plumbing, HVAC, roof, windows, and major systems throughout offering the benefits and peace of mind of modern construction. Spanish tile-lined walkways welcome you into a sun-drenched great room featuring soaring vaulted ceilings, an inviting fireplace, and an airy open-concept floor plan designed for both everyday comfort and sophisticated entertaining. The designer kitchen serves as the centerpiece of the home, complete with a large center island, Carrera marble countertops, Samsung Smart appliances, custom cabinetry, and a striking custom wine display. The main residence features 3 bedrooms and 2 beautifully appointed bathrooms, including a stunning primary suite with vaulted ceilings, a thoughtfully designed walk-in closet, dual vanities, and French doors that open directly to the serene backyard retreat. Step outside to a beautifully landscaped, ultra-private backyard designed to evoke a spa-like experience, complete with a custom-built Finnleo sauna imported from Finland and multiple spaces to relax or entertain under the California sun. Adding incredible versatility and value, the fully permitted detached 1-bedroom, 1-bath ADU includes its own kitchen, bathroom, and separate address ideal for guests, a home office, creative studio, or income potential. Additional highlights include SMART home capability, Nest thermostat, Google Nest doorbell and security system, CAT 6 wiring throughout, and a surround sound speaker system. Perfectly situated near Short Avenue Elementary School which has a 10/10 GreatSchools rating, shops, restaurants, and lifestyle destinations of Marina del Rey, Playa Vista, and the greater Westside, this rare Spanish sanctuary offers the ideal blend of charm, sophistication, and modern convenience.