We were at yiannis house with 5 people. It was Very clean, the communication with yiannis was super quick (most of the time he answered within a few minutes like he was really available) and uncomplicated. His parents were very friendly, we had just a short walk to the beach (good to know: If you buy something at kefalos market which is 2 minutes from the house by foot you can use the sunbeds and lay at the beach the whole day) and to the nice and small town of kefalos. Only thing was that if you travel there with 5 people like we did, the bed for the fifth person is not really comfortable but will do its job for a few days.
We had a wonderful time there and would definitely recommend!