My house located at Seoul Station and Seoullo7017
In the seoul station can use subway line1,4 , kyeongeui line, AREX(airport subway), KTX and Seoul station bus transfer center. So you can go most places in the seoul station easily
In front of my house is start point of Seoullo7017, So can walk to Myeongdong, and Seoul tower.
And most attractions can reach within 15mins(Gyongbok Palace, Cheonggaecheon, Myeong dong and Dongdaemun)