We had a reservation for 3 hours. One of the delivered bikes had a rather flat tyre, so I asked the guy at the Bike Rental Central Park if he could fix it. Apparantly he gave the tyre all too munch pressure, with the result that the tyre exploded after 30 mins ride in the Park. We therefore had to walk all the way from the northern end of the park back to W 57th Street. Had it been a normal puncture I think I would have accepted it as bad luck, but it was obvious that the reason was to high pressure and/or too old tyres.
We carefully explained the situation and asked for a appropriate refund, but got the answer that they could offer us an extra hours ride or a voucher to huse within kone year. They were nerver understanding and not flexible so for us 3 hours payed bicycle tour was transferred to 30 mins.