Hey man. Been there half a dozen times on family holidays since I was younger.
I'm heading there in May for a couple of weeks this year and I'm 50/50 whether to take my stuff this time.
Basically the set up is this. 3 kite spots, 2 of them are average in the north and then there is Prasonisi in the south as mentioned above.
The spot COULD be really good. From sometime in May til september it's good 10 - 7m weather most of the time. Except light mornings.
It blows onshore on the Aegean side with some decent sizes waves out the back, can get up to 6ft in my experience and there's the possibility of a sick session there. On the other side (mediterreanean) it blows off shore over the beach, Completely flat. Sounds pretty good?
It can be. BUT. Same old story, Germans taking over Europe. They take over the whole place, there is no space whatsoever when they arrive. More than one school teaching in pretty dangerous conditions, plus it's also full of tourists who come to see what's going on. On the flat side you have a tough time finding space in between the pole dancers who mow the lawn all day and on the other side is where all the newly born kiters do pretty much the same thing.
However if you are going before the European summer holidays you might be ok, without so many people it is a really good spot.
Olly