Unfortunately the instructions on where to get on the hop on hop off bus were incorrect. This caused me to lose time and not being able to see all the sights I wanted. Your instructions said I could pick it up at Piazza Municipio when actually it was at the castle around the corner and down the street. Also I stood in line to turn in my voucher to be told I would turn it in on the bus, I stood in line for the bus and the door was closed in front of me as it was full. I then had to wait for 20 more minutes for the next bus. In all I lost about an hour of time. Had I not already paid for this I would have left. I am not happy I did not get to see anything but the museum.