My dads reaction was why don't you go to Spain instead.
We've been here just over a year and a half, and he's visited 3 times, the last time was for a month!
My mum went to Kusadasi many years ago and hated it and has no intention of coming back to Turkey.
My sister came for Christmas, and is coming again this year and loves it here.
You wont please them all, but the main thing is to be happy yourself, life's too short.