Corodoba is truly incredible and its always nice to have friends come visit and enjoy what you love and enjoy so much about the city. If they´re coming, and you don´t have room for all of them to stay on your couch, book them in a cool local hostal.
I would recommend Baluch Backpacker´s Hostel. Its a cool laid back place where your friends can socialize and also be in a cool area. You can book this here: http://www.minihostels.com/cordoba/baluch-backpackers-hostel.html. I¨m just saying. Its great to have people visit, so hook them up with a great place!
