This is the 13048th most frequent Korean word.
동부지역에
"동부지역에" means "in the eastern region."
Here, '동부지역에' specifies the location to describe a feature present in the eastern region.
그 동부지역에 아름다운 해변이 있어요.
There are beautiful beaches in that eastern area.
In this sentence, '동부지역에' indicates the specific area where the luxurious hotels are located.
동부지역에 있는 호텔은 정말 고급스러워요.
The hotels located in the eastern area are very luxurious.
Here, '동부지역에' expresses the destino where the speaker plans to go during summer.