What a lovely villa!
I spent a week there with my parents - they don't like busy touristy resorts, so this was perfect: quiet and calm, just sheep can be heard around! Afrathias beach is just a couple of minutes away on foot or a minute in the car and it's beautiful! It can be a bit windy sometimes, but there are some wonderful sheltered sunbeds at the villa you could use on windy days and an outside shower with hot water which is a nice alternative to a pool.
The space itself is wonderful, has everything you could possibly need and is very tastefully decorated. Huge garden with grapes, lemon and fig trees, herbs, pretty flowers and cats :) There's also a BBQ and pizza oven.
No supermarket within walking distance (a car is a must!) but we got food in Kalamaki which is a 10 min drive.
Also there's bigger supermarkets in the town of Moires which is on the way from Heraklion.
Heike was great, really welcoming and responsive and we got some really good taverna recommendations from her!
We had a great time, thank you Heike!