I'm sad to say that we were unable to take advantage of Bike & View. I made a reservation with them online because the the great reviews and best price. Unfortunately my son and I got sick and we had to cancel at the last moment. The website and fine print list a $15/person administrative fee for cancellations within 24 hours of the rental period, which I was not very excited about, but we were sick. I sent an email to the shop (couldn't leave a voicemail on their answering machine for some reason), and went back to bed. Later in the day, found a reply saying they were sorry to hear about our illness, hope we were well soon, and not to worry about the cancellation fee.
I'll definitely look them up next time we're in San Francisco.