I travelled in Greece for a month (in May) with my partner and our newborn between villas, airbnbs and hotels and this was our favourite and most memorable stay. The apartment itself is beautifully built and reflects the host's background in architecture. It's impeccably clean and perfectly laid out both inside as well as with the two balconies: one facing the beach and sunrise and the other facing the gardens and hills for sunset. We used the garden side the most as it was quiet, private and didn't have much direct sun.
The (private!) beach access is literally 10 meters away from the front door with very comfortable bean bags and natural tree shade. When we were there in May, we felt like we had the beach to ourselves.
Stelio himself was an incredibly kind and helpful host. We rented a car and explored the island for a couple and couldn't imagine a better location that this one. I had a concern since the apartment is right beside a road, but there is very little traffic there so that wasn't an issue. Very highly recommended.