Totally recommended and a good option to the overlooked Inca Trail !. Take as less stuff with you as possible and a lot of sun cream and mosquito spray. Some days acclimatization in cusco will help you a lot bcs Salkantay pass is 4600 m high. The equipment is fine and you can rent a sleeping bag from them but the tents are build for people with Peruvian size (they are so little, cute :). The trip is really good organised and Raul the guide knows a lot about interesting things I the way and good cocktails :) One bad thing to say about the trip is that you become informed to late about a briefing before the trip, so plan a hour for that in cusco.