I've just got back from 2 weeks in Sidari staying at the Marilena and i honestly couldn't fault it.
We had brilliant rooms (a twin room each) the maid service was very good, ever other day. They have a pool, something which i think is quite new and air conditioning.
Would stay there again!
We stayed here in 1998. There was no air conditioning then though of course they might have put it in since. However the accomodation was better than average. Our apartment had 2 separate double bedrooms as well as a kichen/diningroom, with an electric kettle and toaster, things you don't often find in Greece.
I just want to know if there is air condidtioning in your apartments