Depart Toronto on an early morning flight (Air Canada or United to SFO, ~5.5 hours). Arrive by early afternoon. Pick up your Turo rental car at the airport (reserve a compact or mid-size sedan for city driving and Bay Area exploration). Drive to the Mission District and check into your Airbnb by 4 PM. Dinner: Head to Flour + Water (Mission District) — a celebrated farm-to-table spot where the pasta is made fresh daily and the wine list celebrates California producers. Book ahead; this is essential. The intimate, candlelit space and handmade ravioli will set a romantic tone immediately. After dinner, walk Valencia Street for evening energy: vintage shops, street art, and late-night cocktail bars like Trick Dog (craft cocktails in a speakeasy atmosphere) if you're still energized.

Start at Ferry Plaza Farmers Market (Tuesday–Sunday, best on Saturday, but Wednesday has excellent offerings). Arrive at 8 AM when vendors are setting up. Buy fresh strawberries, artisan cheese, and pastries from Arizmendi Bakery (worker-owned cooperative; exceptional sourdough). Sit by the waterfront with coffee and croissants, watching the bay wake up.

Drive across the Golden Gate Bridge (keep the car — you'll need it) and head to Muir Woods National Monument (12 miles north, 25 minutes). Walk the Cathedral Grove Loop (easy 1.3 miles) among 1,000-year-old redwoods. The misty, primordial forest is profoundly romantic. Pack your Ferry Plaza pastries for a forest picnic. Return to the city by 4 PM. Afternoon aperitivo: Stop at Vesuvio Cafe (North Beach, near City Lights Bookstore) — a legendary Beat Generation haunt with negronis and local wine; sit at the bar and soak in literary history.

Dinner at State Bird Provisions (Hayes Valley) — an innovative, playful restaurant where servers push carts of small plates around the dining room. It's interactive, joyful, and deeply San Franciscan. Book 3 weeks ahead (yes, it's that popular). The wine pairings are exceptional. Post-dinner, walk through Hayes Valley: street-level galleries, vintage shops, and the atmospheric Zeitgeist beer garden (outdoor, communal tables) if you want a nightcap in an authentic local setting.

Drive to Napa Valley (1 hour north via Highway 29). Skip the big-name wineries; instead, visit Oxbow Market in Napa town (8 AM–6 PM) — a local market hall with artisan vendors, excellent coffee (Ritual Coffee Roasters), and prepared foods. Browse the produce, charcuterie, and local crafts.

Visit Domaine Carneros (Napa Valley, Carneros region) — a stunning château winery with a terrace overlooking the valley. Order a flight of sparkling wine and Pinot Noir. The views are breathtaking, and the tasting room is less crowded than Napa's main drag.

Lunch at Bouchon Bakery (Yountville, 15 minutes south) — Thomas Keller's casual café with exceptional pastries, sandwiches, and wines by the glass. Sit outside on the patio. Explore Yountville on foot (charming village with galleries, bookstores, and artisan shops). Visit Napa Valley Wine Library (free tastings of local wines in a community space).

Drive back to San Francisco (1 hour). Dinner at Zazu (Hayes Valley) — intimate, ingredient-driven cooking with a focus on local proteins and seasonal vegetables. The wine list is curated by the owner and celebrates small California producers. Candles, wooden tables, quiet sophistication.