Check out this great place to stay in Mapo-gu
Entire home/apt in Mapo-gu, KR. House stay in Hongdae, Mapo-gu. The guesthouse is an apartment on the top floor with rooftop mountain view. Quite area, 15 min walk from Hondae center. Three major subway stations nearby (Gajwa, Mapo-gu Office, Hongik University) All are welcome.