Come check out my first thread for things to do in Seoul! :) For hotel recs, I’m not sure what neighborhood you’re considering, but when a friend of mine from the States visited, they stayed at Midcity Myeongdong. It’s in central Seoul, making it super convenient for sightseeing. It’s close to a metro station and bus stops, so you can easily access popular attractions like N Seoul Tower, Gyeongbokgung Palace, and Dongdaemun Design Plaza, + plenty of restaurants and shopping nearby.