Air Con is a very expensive item to run here which is why the owners charge and we all accept it graciously.
However, and just a thought, wouldn't a fan do the job just as well?
And, with air con, would you get your 5e worth each evening?
I'm not sure if you can still hire fans from the appt owners but, when we stayed at Elena/Stella many moons ago the owner supplied one foc.
Our house at Kavaddades doesn't have air con and we get by with a fan in the kitchen , bedroom and lounge. Only switched on when we need it, and cheaper.
I 'spose I'm a tight 'ole bugger and what I save on air con I spend on Ouzo.
Cheers
Negg