Immaculate single-level modern ranch house positioned perfectly on Allyn Ave, one of St. Helena's most desirable and charming streets, just 4 blocks from downtown. Sited on a wide .28+/-acre parcel and constructed in 2016, this thoughtfully designed layout includes a 2,370+/- sf 3 bedroom, 3.5 bathroom main residence and 515+/- sf 1 bedroom, 1 bathroom casita, featuring an expansive 1,300 bottle wine room. The spacious vaulted living and dining room, anchored by a cozy gas fireplace, flows effortlessly into the gourmet kitchen, complete with Thermador appliances, marble countertops, and a large island with ample storage. Two sets of bi-fold doors seamlessly blend indoor and outdoor living, designed to take full advantage of the perfect Napa Valley weather. The generous primary suite enjoys vaulted ceilings, a gorgeous five-piece bathroom, and a large walk-in closet. Sierra Pacific windows and French doors provide plenty of light and direct access to the back patio. The outdoor living room includes a fully equipped, shaded kitchen and sitting area. Lush landscaping surrounds the heated pool, hot tub and gas fire table. The adjacent casita offers privacy and versatility as a guest suite, home office, or studio.