Marcos was a great host - very communicative leading up to our stay, providing recommendations and making sure that everything went smoothly. There is no real "check-in" process, as the apartment has a key code on it. You check-in with the building security guard (first time only) and head up to the apartment. The apartment is great - beautiful corner apartment with lots of windows and great views. It has everything you need - a small kitchen, living room with cable tv, a/c, bathroom, dining table, and a nice balcony with chairs. It is in a great location within Palermo, quiet street but still within blocks of all of the best restaurants. If I return to Buenos Aires, I would definitely stay here again. Thanks Marcos!