All in all: can recommend! Efty is a very communicative host and his assistant Flora there for you when needed. We stayed there for over a week, and if you are like us you will appreciate the quieter are it is in and the fact that you can easily walk into town (Ano Mera) and grab dinner in one of the cute local restaurants there.
The apartment was clean, the pool is quite large. just be quick to grab one of the limited seatings there ;)
Efty has connections to a driver (Vassilis) who can take you around the island and also hook you up to other experiences there.
Thanks to Efty and his team!