You shouldn’t lose of sight what the rental will cost you in total—including any "hidden" costs, not included in the base rent.
SHORT TERM RENTALS (till 4 weeks); here charges look simple, just the rental fee + used electricity (according to the electricity meter) + security deposit
SHORT TERM RENTALS (over 5 weeks) & LONG TERM RENTALS (min 6 months) ; here a bit more complicated as it depends on the property; to rental fee you will be asked to pay for used electricity & water in accordance with incoming bills, gas ( in Alanya only gas cylinders are in use), administrative fees (which depend on the building standard - 30-70 € per month), internet, etc.
You may find a rental that will include all of your utilities, but there are plenty out there that expect you to pay for some or all of the cost for water, sewer, trash, electricity, Internet service and TV cable (e.g. Digiturk is very good to have if your aim is to learn Turkish faster :)
To be fair, these aren’t really hidden fees - just you need to understand what you’re responsible for and how the bill is going to be charged.