In the first villa we stayed in it did give a minimum temp to set it to, also advising us that if we went below this the unit would have to work extra hard and could be damaged as a result (especially if the pool door etc was left open).
If this were to happen we would lose the security deposit, so make sure you do check the villas guest book and follow the advise given.
After staying in a few hotels and struggling with the air-con they provide it really was a luxury to be cool all day - every day.
God Bless the villa lifestyle
The Pegs