My room is close to Hongdea Station and easy to travel Seoul with subway.
It's located 3 minutes distance from the Hongdae Station Exit 2! So, it's really safe for women and men even at night!
My house placed near Hongik university station. This place is really famous to foreigners and young people.
You can use AREX and subway line 2(Green).
Also, you can take the bus!