Staying in Seoul until July 30, what's to do here?

Doing an internship here for a month and I don't know any expats here. I really liked the expat community in Shanghai, where I've lived before Seoul, so I hope it will be as equally good here, if not better!

Sooo, what is there to do in this city? Anyone who is up for drinks and clubbing? Or maybe take it easy with coffee and shopping? Let me know and we can meet up! :D

I'm also meeting some of my Korean local friends this weekend, if you want to join us to Hongdae on Friday, again, let me know.

Ciao!