I've traveled with black friends as a college student in Argentina. One was tall good looking with dreds, he had to turn down women. The other two were Somalian (Live in Minneapolis) The girl felt liberated, didn't were a hijab, as she would in front of her family, she was wearing mini skirts, she got laid. The other was a Somalian guy, and he was more religious but he was hooking up with a jewish girl. I promised not to tell his father, we had a good laugh about that. So those folks had a blast, got laid, learned Spanish, engrossed themselves. Had no problem with racism, they got looks occasionally but not negative, just curiosity. That is why I love Argentina, if you are cool and show interest in the culture there are no problems.