Just an update on my initial post for anyone who might be making the drive to San An from other parts of the island. We found parking easy enough at the marina, only a couple of euros as well. Basically we followed the road into San An, kept following the road past the egg, past the fountains in the piazza area and right into the car park. It was 2hrs maximum and according to someone else buying a ticket at the same time, the option to put another ticket on if need be, not 100% sure on that bit though.