we are backpackers travelling between BA and Bariloche in the days following Christmas. we are hoping to do the lake route on the 29/30. is that enough time particularly given that we don't have our own transport and relying on the bus and hitchhiking? what would be a good place to stay prior to starting the lake route? San Martin De los Andes sounds really nice but we were thinking there might be a more economical option prior to that town?? we prefer towms to cities. any advice appreciated.