We had a wonderful stay at this villa. It comfortably held us, our 3 and 4 y/o children, 3 grandparents and two other adults.
The host lives in this property for much of the year meaning it is very well equipped with everything you could need (eg good cooking pans). There are countless different places to sit and eat, inside and out. The kitchens (there are two!) are well provisioned with equipment and the host kindly left food, beer and wine for us on arrival. There is ample bedding, towels, toiletries etc provided. There is a fig tree at the bottom of the drive where we picked lovely figs.
The pool is really VERY big with a large deep (2.5m?) area but also a shallow 'kids' area maybe 0.5m deep which the kids loved. Non-swimmers would need supervision though as they can move into the deep area by mistake. There are several outdoor seating areas, plenty of loungers and a wonderful covered bbq and dining area (on the Eastern side of the house, away from the pool area). There is a lovely view out to the sea, mountains, and olive groves and it so peaceful.
The house is a 20m drive from Heraklion and the airport. It's easy to get to once you have learned the way. DO NOT follow google map directions which uses obsolete roads. The host will show you the way from nearby Ano Kalesa.
There are some outdoor toys; swing, a playhouse and slide for the children and a shady area to play. The house also has a cot.
The host was very helpful and friendly and replied quickly by text to any issue we had (e.g. when we couldn't find the pool cleaning net). He even offered to taxi some of us to the airport!