Hi Ian
I always take sunset shots, every year I try to get a better one, I have tried pictures all the above places as well.
My best couple of pictures were taken from the following;
The road about 300 metres past the Romanza heading out of town towards Avliotes.
I managed to capture a fishing boat just entering the 'Red' suns beam - still a great shot on an older camera.
Athena Hotel, stand just to the right of the wall above the pool by the walkway down to the Beach,
get the pool in the foreground - looks great and can appear to be an extension of the beach.
The Road side near the Church is also a good place to get a special shot, or over the new harbour as well.
I treated myself to a new camera this year - so hoping to get that better picture again.
Have fun
Tony C