done some of it over the years,as day walks though, so, i don't really know about accommodation but there are several good places to wild camp, and there are hostels too. i've done the devils staircase one or two times but the most spectacular section,i thought was from bridge of orchy to kingshouse, a really strong feeling of being alone!....but not for long in the midgie season. worst place ever is at the small campsite round the corner from inveroran hotel ,but on the whole i enjoyed it ,the scenery is fantastic.there used to be a company called ptarmigan ,who transported people back and forward every day to the whw ,and took them to the hostel in glen coe at night ,but i've not seen them in a while so i don't know if they are still going ,but a good idea none the less!