Greek Isle Cruises

If not, what do you recommend Cruise Line to the Greek islands and why? Thank you.

Golden Star Cruises Aegean go to (meaning to the Greek islands) and the Mediterranean Sea. Click on the link below:
http://www.goldenstarcruises.com/gsc/cru ...

Also you can check the new Easycruise - very promising

http://www.easycruise.com/

I do not remember the names of cruise lines, but I took the 4 and 5 day cruises twice. Expect great service, great Greek food excellent entertainment on board and many excursions. Both times, cruise ships were registered under another flag (I think that Portugal).
Whatever the cruise line is as long as you have good company and you're in a holiday mood, it will be great
In the end you feel you do not have enough time to see everything and need to come back for more ...:)