You have to be careful about how many hours you book for because they start the clock before you get your bike. After we checked in we had to wait about 10 minutes before they gave us our bikes, and they were supposed to include a lock, but didn't, so we had to keep our bikes glued to us the whole time. After receiving the bike it was another 10 minutes to get to Central Park, since there are no bike lanes on the street nearby and you get stuck behind mobs of people. So I was really stressed out about time by the time we got to the park. I was glad we did it though, as I had never seen Central Park before and needed a quick way to get an overview. Oh, and one more thing, they force you to buy insurance for the bike, so that's another $5 onto the price. They should warn about that in the tour description.
Rental shop was easy to find, well stocked with bikes and very efficiently run. Excellent family day out
I was visiting from out of town and booking online was not only easy but I saved money as well! Staff was super friendly and had us in and out of there.