I had a very good stay in the apartment, which is right on Achlia beach.
The large sun terrace and outside seating area add to the generosity of the location, A beach bar and restaurant are two minutes away.
The apartment is well-equipped, practical and was very clean. Communication with the owner was easy and they also came by every two days to water the plants, so there was ample opportunity to ask questions etc.
A car is recommended as there is virtually no shopping option locally.
I would fully recommend the location.
Achlia has a stone beach, but fine round stones that are comfortable. Infrastructure is available (bar, showers, sunbeds against a modest fee). The beach is suited for children and adults,