Annual increases are tied to the twelve-month average consumer price index. In a high-inflation year that is a real constraint on the landlord and a real exposure for the tenant, and it makes a lira yield a moving number rather than a fixed one.
The deposit is capped at three months' rent under the Turkish Code of Obligations. Rent paid in cash without a bank record is a dispute waiting to happen; transfers with a reference are the norm for good reason.
European-side, Asian-side and Bosphorus-front lettings are three different tenant markets. Aidat — the building service charge — sits outside the quoted rent and rises with inflation like everything else.