Santorini is beautiful all together as what the post cards portray. The sunsets are incredible over the Caldera from the beautiful Roccabella **** Hotel. A hotel I highly recommend. There is great food, great people, the ruins of Ancient Thira, donkey rides etc..
Fly into Greece, Athens Olympic Airlines to Santorini.. I'd get a car when ou get there so you can drive around the Island.
Anything more I'd be glad to help.