We did a 3 day hike with Juan, to Refugio Grey, across to Jakob and back down to Bariloche. Amazing experience. Definitely needed a guide to get across the snow from Grey to Jakob. Juan was great company, we felt very safe with him and he encouraged us all the way. First day is a relatively easy 10km uphill to the first Refugio fuelled by food carried by Juan. Refugio Grey is pretty basic but food is good. Next day was an 8 hour trek, lots of snow trekking, steep descents over scree and boulders, and 2 short river crossings without bridges requiring boots off and very cold water up to your knees. Jakob was fabulous, a long walk to the bathrooms but comfy and good food. Next day was a lovely 18km gentle descent to Bariloche. Highly recommend this tour company, Juan is clearly very experienced and we would love to go back and try the kayaking and more hiking.