I found this travel agency via a Lonely planet guidebook. I took their football experience tour to watch a River vs Boca game and it was the greatest event and atmosphere I have ever experienced in my life:)
After that I booked with them a tour in Patagonia and a few more tours in Buenos Aires. The guides where cool and the tiger navigating expedition better then the commercial one.
I really recommend these young people for whatever you want to do in Argentina.
Florida pedestrian street number 971, inside Galeria Larreta, ground floor, shop 31.
Tel.:+54-11-4312-7276
web@tangol.com
www.tangol.com