I would not miss RIO. It is one of the world's most beautiful cities! The people are very friendly and is very inexpensive.
I am currently in Buenos Aires, I have been here for 3 months and absolutely love the city! If you are looking for a place to stay I would suggest you contact
www.friendlyapartments.com they have great furnished apartments in the best part of the city "RECOLETA".
For an amazing day spa for men check out: Markus Day Spa
www.markusformen.com
Now if you want info on clubs here...
Thursday: Club 69
Friday: Drinks... Bulnes Class. Dancing... Glam
Saturday: Pacha and then Amerika (starts at 3am)
Sunday: Palacio and then Amerika