Westin San Francisco


Sophisticated Twists on Comfort Food Favorites

Our emphasis is San Francisco California Cuisine and the use of coastal fresh and local ingredients which are acquired daily from our hardworking California farmers and farmers markets. MaSo menus are changed to accommodate the availability of ingredients in season. Our fish is always wild and our meats& poultry are pasture raised, antibiotic free. - Executive Chef, John Hart MaSo’s interior is reminiscent of the technological revolution and the early days of the Silicon Valley. By combining the aesthetic of vintage school rooms,computer laboratories and detailing of early computer technology, guests will visually feast on ticker tape screens, vintage clipboards of nostalgic photographs and vacuum tube light fixtures.

MaSo Reservations

Hours of Operation:
Breakfast - Monday thru Friday 6:30am – 10:30am Saturday & Sunday until 11:00am
Lunch – Monday thru Friday 11:30am – 1:30pm
Dinner – Daily 5:30pm – 10:30pm
Happy Hour – Monday thru Friday 5pm– 7pm
Lounge – Daily 11am – MIDNIGHT/Bar Menu Available 4PM –10:30PM
Terrace – May thru October [Weather Permitting] Monday –Friday 3pm – 9pm

MaSo is perfectly situated for your downtown event located in the vibrant SoMa District, walking distance to the Moscone Center & Union Square. Our Private Dining Room incorporates French Doors, privacy window screens, and a TV monitor for media. The MaSo Restaurant and Terrace are available for semi private and buyout events.

For Private Events Contact our Restaurant & Bar Sales Manager:



MaSo Breakfast Menu

MaSo Breakfast Buffet Menu

MaSo Gluten Free Menu

MaSo Lunch Menu

MaSo Dinner Menu

MaSo Dessert Menu

Weekday Afternoon Menu

Weekend Afternoon Menu