My apartment is located near "Dongdaemun" ( Just 10min - by subway 3 stop from my place) in the heart of Seoul. This is a perfect place to go shopping, visit night markets and many tourist attractions. Also it is a safe and secure place. ( 11F, 400ft²)
Transportation is super easy. Subway station is 2 minute away and also there are many buses.
You could visit any places in Seoul very easily. During night, Night buses will take you from everywhere to my apartment.