sorry was a bit vague about water park, it isn't far though, we hired a car but am sure you could get public transport or an organised trip if you dont fancy braving the slightly scary roads!
I saw the hotel you booked and that was the one we said we would book if we went again, it has a great location by the beach.
On our last day (yesterday, although it already seems like years ago) we spent it on the gorgeous beach at Pefkos and then hired a little boat out for an hour, a lovely end to a wonderful 2 weeks. You and your children will have a great time and they will be spoilt everywhere they go!