This is the 10698th most frequent Turkish word.
dairenindir
"Belongs to the apartment."
The word 'dairenindir' here is used to show ownership of the apartment relative to the keys.
Bu anahtarlar, üst kattaki büyük dairenindir.
These keys belong to the big apartment upstairs.
The word 'dairenindir' here emphasizes possession of the garden by the apartment.
Bu bahçe, alt kattaki küçük dairenindir.
This garden belongs to the small apartment downstairs.
The word 'dairenindir' here indicates the possession of the parking spot by the specified apartment.