Husch is a small family-owned winery in the Philo area, 40 minutes from Mendocino.
Heritage House has amazing views and great food with a sea view.
Great hiking options through the redwoods.
Downtown Mendocino is a quaint community of small shops and restaurants. Definitely worth walking around. Find beaches and trails at MendocinoLandTrust.org/trails
This winery is about 30 minutes away from Spring Ranch, and is on the way to or from the Bay Area.
Goldeneye is part of the Duckhorn Family Wines and is known for their pinot noir. They are ~45 minutes from Mendocino (and also on the way to or from SF).