We had a nice time in SF. There was great food, shopping and sights! We especially liked Valencia Street for shopping in the Mission. David was very accommodating with suggestions and info. He also let us print our itinerary for our flight the next day. For people that aren't used to city-life, you may feel a little uneasy with some of the locals-especially at night. We tried to stay budget-friendly, so we used all of the public transit offered and that was a mixed bag. Bring your tennis shoes for sure! Lots of walking, which is good if you're trying to burn off calories from lunch :)