Electric power, water bills etc.
As a rule, these bills are not included into rental fee and should be paid separately. Electric power and water consummation is measured by meters uand upon checking in and checking out. Better if you know the power and water unit prices before checking in, because the rates can differ even within same building.
Electric power bills are most expensive articles of your monthly budget. In many cases, you can minimize your payments by replacing air conditioners with fans. Anti-mosquito net also allow keeping your windows open (and your money saved).