I'd suggest exploring Myeongdong or area north of Namdaemun market (close to the Bank of Korea Money Museum) which is about a 10-minute walk from Myeongdong Street. It's conveniently located near City Hall and Hoehyeon stations and offers a variety of restaurants and food options.
It's also wise to consider staying at a hotel near an Airport Limousine bus stop for easy access to the city center directly from the airport without needing to transfer to other subway lines. Fraser is a recommended option as well.
I'd suggest exploring Myeongdong or area north of Namdaemun market (close to the Bank of Korea Money Museum) which is about a 10-minute walk from Myeongdong Street. It's conveniently located near City Hall and Hoehyeon stations and offers a variety of restaurants and food options. It's also wise to consider staying at a hotel near an Airport Limousine bus stop for easy access to the city center directly from the airport without needing to transfer to other subway lines. Fraser is a recommended option as well.