Chartering advice for the Greek Islands
Choose a reputable, established charter company (eg Vernicos, Kiriacoulis, Moorings). If bareboating, avoid GPSC.
Head for the Cyclades or Dodecanese. In springtime the Ionian Islands can be coolish with some rain. The Sporades are better in the summer. Saronic Gulf OK but perhaps not so interesting. If you are coming from the US the Cyclades are easiest (Vernicos have opened a base at Lavrion, about 30 min from the new Athens airport).
I''ve had excellent service and advice, at no charge, from a broker called Nigel James (www.nj-yacht.com)
We''ve sailed in the Med over 20 years... you''ll love it!