This is the 1479th most frequent Turkish word.
bölgesine
"To its region" or "to the region."
Here, 'bölgesine' is used to describe proximity or direction towards the quietest part of the city.
Evimiz şehrin en sessiz bölgesine yakın.
Our house is near the quietest region of the city.
The word 'bölgesine' here indicates movement towards the coastal area of Antalya.
Antalya'nın sahil bölgesine tatile gittik.
We went on vacation to the coastal region of Antalya.
In this sentence, 'bölgesine' refers to a specific part or region and shows the dependency or relation to it.