We have just returned from kefalonia where we stopped at the Marietta Studios.
The rooms were basic but suitable for our needs as we didnt spend much time in it. Other people have commented about noise but we found it very peaceful we heard no barking dogs or goats bells. The pool was cold but it was ideal for hot days and most of the time there was not many people in it so you have it all to yourself and sunbeds were always available. I would definately return to these studios again for many reasons location, cleanliness and facilities.