The best way to get to Refugio Frey trailhead is by bus from Bariloche or by driving your own rental car. The buses leaves on an hourly basis and the ride takes about 1.5 hours. The trail starts in the parking lot at the base of the Cerro Catedral ski resort. From there you just have to follow the “FREY” wooden sign. If you are arriving by car you can park in the main ski resort car park at Villa/Cerro Catedral, it is generally safe.
Mount Fitz Roy
You want to get to the town of El Chalten. If you are from Buenos Aires you have to fly