This is the 7583rd most frequent Turkish word.
hastanesini
"His/her/its hospital" (possessive form in Turkish).
Here, 'hastanesini' refers to the hospital associated with Ahmet, or the one he frequents, showcasing ownership.
Ahmet, yeni açılan hastanesini çok beğendi.
Ahmet really liked the newly opened hospital.
In this case, 'hastanesini' is associated with the doctor mentioned, indicating the hospital belonging to him.
Şehirdeki herkes hastanesini yenileyen doktoru konuşuyor.
Everyone in the city is talking about the doctor who renovated his hospital.
Here, 'hastanesini' is used to signify the specific hospital that the woman is connected to or has been to before.