Catedral is the biggest resort in Argentina. The vistas of Lake Nahuel Huapi are incredible and the stegasaurus like ridgelines with granite spires piercing through the snow make Catedral one of the most aesthetic areas to ski. Lagunas is a sweet off piste zone. There are numerous on mountain refugios that are great to duck into for a coffee, or pastry or a full on decadent lunch.
Bariloche is a great adventure city with tons going on. There is much more to do near the city center than at the resort.
The downside to Catedral is it can get very busy. Don't expect the resort to get running early on a big dump day. Also the lower mountain is poorly designed, lots of criss-crossing trails. Catedral does have some decent tree skiing, but the best terrain is higher up the mountain. The amount of off piste terrain is enormous but beware this is a big avalanche zone with serious consequence.