There are several Osha Thai restaurants around the city, but the one on the ground floor of 4 Embarcadero Center is pretty large and has a patio overlooking the plaza and Ferry Building. They make reliably great food, with everything from pad see ew and duck curry to noodle soups like khao soi, and it’s an ideal spot for groups or a quick fuel up before or after a stroll on the waterfront. You can also stop here for a few really good cocktails, or daily Happy Hour (5-7pm) with $1.50 oysters, $5 beers, and $7-$9 appetizers.