We too have stayed at Leonidas several times, the last time was however the last time. This was 2 years ago. We were in one studio & our 2 sons & their girlfriends each had a studio.
I suspected after a few days that someone had been "looking" through our things, so one morning before going out I placed items in specific places that had no reason whatsoever to be moved, when we returned late in the afternoon I found my handbag had not only been moved but was now lying open & a £20 note missing from my purse, several items of clothing went missing, including a bra! One son had several packets of cigarettes go missing & both the girls "lost" t-shirts.
I mentioned all this & several other incidents to the rep, he returned later to tell me that Leonidas & Eleni said I was "mistaken".
I also requested that the children of the cleaner be asked not to enter any of our studios as I had walked into 1 of my sons studios thinking he was there only to find the cleaners son playing on my sons computer game, which he switched off guiltily, losing my son a lot of data he had saved, plus the cleaners daughter was in the bathroom spraying perfume.
Also there were 2 girls staying in 1 of the studios, it turned out they lived not far from us back home, they left a week before us, when they got home they texted me to say they must of left 2 shirts behind, could I bring them home & they would pick them up, needless to say no-one had seen them!
I decided not to pursue anything as we return to Arillas every year & did not want to create hostility!
I was also reticent to report it on this forum at the time as I knew people would be quick to defend.
I know no-one wants to believe these things go on but I also know that I wasn't "mistaken"
I will say that it didn't put me off Arillas but it has made me become a little more aware.