I ate there on my trip a month ago, was not impressed with the food, the atmosphere is cool, but there are so many other amazing restaurants in SF that are so much better.
Great place to picnic on the weekends. Pick up some sandwiches from Ike's, ice cream from Birite and some beer and wine and picnic with your local hipsters!
Haven't been here yet, but hear great things about it. Sort of like a Disneyland for science. It's highly interactive and fun with more than one person, so it's perfect for you and your partner!