We stayed in the apartment a week in Mai 2015. We are a family of 4.
It is a very convinient flat, modern and new. It was good for the kids that they could go outside.
We met a whole family, absolutely nice and helping people, everybody speaks english.
To the old town it is approximately 15 minutes walk. The nearest butcher (+ fresh eggs, cheese, bread) is just opposite on the other side of the street. A supermarkt is 5 minutes walking distance.
Retymno is a good place to go anywhere - we went to the south to spend time on really authentic beaches (30 min with a car), you drive 2 minutes to the high-way.
Thank you very much!