BKD you can also check this site for lots of infos about santorini (and accomodation)
http://www.santonet.gr/

Does Altamare look as good in person as on their web site? Are these apartments? Looks great and a pretty good deal, too.

Has anyone taken the ferry from Rhodes to Santorini. Looks like there is an overnight ferry that stops in Crete, but I can't tell for certain.

I have posted a review and some photographs of our room & view on tripadvisor. Check it out:
http://www.tripadvisor.com/ShowUserR..._Cyclades.html