This hotel is old, but very comfortable.
Originally, I booked a room here because it has a bath tub and the location is very good.
I've visited Seoul before and knew the streets have so many ups and downs, it takes sometimes more than 10 minutes on foot between 2 stations, so you can't recover fully without bath tub.
Regarding the location, you can walk to Cheongdam station within 5 minutes, Galleria 20 minutes, and COEX 30 minutes.
As for its service, all the receptionists can speak English very fluently, and they are so supportive. Definitely I'll come back when I visit the city next time. 감사합니다.