I recently spent several weeks holidaying and working around Airlie Beach and Cannonvale and used the excellent services of the Whitsunday Laundromat which is located within the Whitsunday Village shopping complex.
The Dexter washing machines did a great job even with a bulky item I had (doona). The shop was clean and well maintained. It was really convenient having the change machine so l didn't have to worry about bringing the right number of coins ($1 and $2 pieces).
It was also handy being a few seconds walk to shopping or grabbing a coffee or something to eat at the range of eateries.
Completely recommended if you need to do washing and drying when visiting Airlie or Cannonvale for business or pleasure.