These are gorgeous books - pricey too, but show the locations in glossy full colour with nice illustrations and pictures. Tons of little details too. Published by Dorling Kindersley. A year 2000 edition is coming out for this, you might want to wait. Greece , by the Lonely Planet Publications, This is the best guidebook to Greece, particularly for travel information around buses, ferries, and schedules.
Restaurants are so, so.
For example, they will say stay here or this is kind of dull - but the Greeks go here on holiday. If it is a Greek experience you are looking for, they do use hotels and resorts or have summer homes. Archeological and background info is skimpy, but adequate for most people. If you only bring one book, bring this one. The Rough Guides are good alternates to the Lonely Planet.