Nestled on a tranquil, tree-lined street in the coveted 'Oak Knoll' area of San Marino, this Mediterranean-style residence has been meticulously maintained & thoughtfully renovated by the current owners. It offers a harmonious blend of timeless elegance & modern comfort. The manicured front yard, adorned with boxwood hedges and pink impatiens, & concrete steps with intricate flagstone inlays, welcomes one to the handsome front door. Elegant wood flooring flows seamlessly throughout, defining the refined interior. The entryway, featuring graceful archways, leads to the public rooms. To the right, the living room is anchored by a fireplace with a French limestone mantel &leaded windows offering garden views. The adjoining family room boasts parefeuilles tile flooring, built-in bookshelves, & French doors opening to a covered patio. Adjacent is the formal dining room with a striking chandelier. The modern, open kitchen is equipped with top-of-the-line stainless steel appliances, a breakfast bar, eat-in area, & built-in desk. The laundry & powder rooms are conveniently located off the kitchen. A bedroom suite with a 3/4 bathroom to the left of the entry is perfect as a home office or guest quarter. A skylight & pendant light illuminate the stairway to the second floor. The grand primary suite features a sitting area & private balcony with serene backyard views, ideal for morning coffee or an evening nightcap. The spa-inspired bathroom includes double vanities, a soaking tub, and an oversized shower, along with dual closets. There are three additional bedrooms, each with custom shutters & built-in closets. A centrally located 3/4 bathroom with classic tiles and a frameless shower door completes the second floor. The large finished basement provides extra storage space or can be a wine cellar. Step outside through the French doors to the covered patio next to the outdoor built-in BBQ island & landscaped backyard. Tall hedges create a private and peaceful backdrop for gatherings & relaxation. A flagstone walkway, adorned with vibrant roses, leads to the guest house (296 sqft) behind the garage, featuring a 3/4 tiled bath, ideal as a spa retreat. The yard offers potential for a pool, paddle court, or guest house expansion as an ADU - the possibilities are endless. An extra-long driveway with an automatic gate leads to the two-car finished garage. This extraordinary residence is a true gem, tailored for the most discerning new owner to cherish for many years to come!!!