Hi - have only stayed there independently (pre Olympic size swimming pool)! Airtours used to go, but your best bet will be to get flight only and book direct with the owners http://www.garden-hotel.gr/

Prices are given for half board for 2 - but I bet that you could get room only if you asked.

I go to the garden hotel evey year have done for the last 7 years.Always book through the owner babis but the flights are getting expensive.Its so nice im getting married there next year.