In reply to sheelba: I passed through Frey a few years ago whilst trekking. It's a stunning place, with what looked like a huge amount or rock available - lots of cracks, lots of towers, all a short walk from the refuge.
The refuge sells all the beer and food you need (though not that cheap), and you can sleep there, or lots of folks were just camped wild (you can hire tents from the climbing shops in Bariloche) around the lake.
Long steep walk up there, or you can get an out of season ski lift up a neighbouring valley and have a leisurely couple of hour stroll to drop down into it.
It'll be very different from El Chalten, but if you looking for single and multi-pitch trad in a chilled environment then it'd be awesome.
(as a recommendation, on the way down I bumped into an old friend who's a guide in Squamish, and he was back for his third visit)