Site seeing in Seoul is one of the most easiest things to do, the places are quite close depending on where you stay ( I was in Jogno). The tower is a must see for Seoul touristers but I recommend going there when it’s getting dark, I didn’t really get the full magnificence of the tower but walking around was quite fun. You get to see the whole landscape ofSeoul and the beautiful love locks in their radiant colors. There are snack shops and some restaurants around. There’s also a bus for easy transportation.