.. I expect you will find one pretty quickly Tweedy. I am glad the Crete forum is your choice of place to advertise (free of course) the fact you need a gardener.
From experience of a couple of weeks back, my going away for just a few days was enough to disrupt the plants, except the cactii of course. Of course I thought that to keep soil damp for the few days before going away would be enough in the hot weather. Clearly it was not.
Anyway, good luck for your search for a gardener, you should get lots of responses from both Brits and local Greeks as earning a euro on Crete these days is no fun with opportunities so tight. BTW welcome to the forum.
A tip for those #Crete forum members living in the #Aghios_Nikolaos area, as part of INCO – the foreign residents association of the area, there is a Gardening Club that meets the first Sunday of each month throughout the year at a Kafeneio in Exo_Lakonia. More details of the meeting dates and a tip on keeping pots plants happy in the hot Mediterranean sun can be found here in this link