Very friendly and helpful staff. In and out within 10 minutes to get our bikes. Very efficient operation. Viator coupon saved a lot of money for us, so it is definitely worth it. Took us 2 1/2 hours to bike one complete lap with a couple of stops at playgrounds. Our group was 2 adults, a 10 and a 13 year old. Bikes all worked perfectly. Hills on the return loop are a bit of a challenge. Many folks walk their bikes up the hills.
We enjoyed our trip around Central Park on our cycles very much. The only down side was that bikes are not allowed to be used inside the park but only around the perimeter so we spent a bit of time pushing the bikes which was not really ideal or what we had expected. However, it is very safe to ride the bikes on the roads and other modes of transport are very accommodating in making allowances for cyclists. And cycling around Central Park gets you to places far quicker than walking.
Great fun, although maybe hiring bikes for 4 hours when it was 100 degrees was a bit ambitious! Central Park really easy to navigate, bike rental only a 2 minute walk/ride away. Bargain too compared to other bike rental options.