There are many reports to be read about this on the website John B. You will find them on the Accommodation Reviews board, then use search.
It is a very popular and highly rated place to stay. Some of our close friends believe it is one of the best, but we all have our preferences. We have so far always stayed up the hill at Annas, Alex and Christos. But have read so many good reports about Dionysis (forgive the spelling!) that we are sure you have chosen well.
In fact, it doesn't matter a lot - if you like the Greek way of life, Arillas will give you it all. It has worked for us for years and others for very many years.
Phil