I am guessing you have now decided on your winter retreat... Just in cse you are still looking.
I have just started my 2nd winter storage ashore at Cleopatra and no complaints so far. They have an attached marina where you could winter afloat but it is open to westerlies and you really do need a car to get around. I believe they now also run the (unfinished) marina across the channel in Preveza which is a pretty safe heaven and an all year round sort of town. I wouldn't go on the town quay in winter as I have seen boats suffer in strong easterlies.
Not sure what the winter is like in Murtos but the town quay is definately no place to be in strong westerlies and even the new harbour bit can get a lot of reflected swell.
I hear many boats go into hibernation in Sivota on Levkas and likewise Vlikho, which has a yacht club that brings a bit of Britain all year round to the place.
Gouvia marina offers really good protection and is not too expensive in winter. Even in summer the on-site bars and restaurants are as cheap
(and much, much better) as the 'supposed' cheap and cheerful offerings outside the gates. It costs just €1.50 to get into town by bus and there is enough going on to keep you occupied through the winter months.