In reply to EuanGowling1:
I did about 4 months of the inaugural Hot Rock trip to S America about 13 yrs ago, and the 2 places that still stand out were Cochamó in Chile, and all the crags around Refugio Frey, near Bariloche. Both are long walk-ins, committing granite climbing, and tend towards harder grades, so not ideal for beginners.
The climbing around El Chalten wasn’t great, ok if you’re there anyway and need a rest day from hiking or mountaineering.
Lots of other good stuff along the way, and much that was more accessible and better for climbing with a beginner, but I’d have to look back for names now.