Fort Williiam, very, very top end, Inverlochy Castle Hotel
Other end, Snowgoose Bunkhouse, right by the basin of the Cal. Canal at Corpach, run by a guy who has done some serious sailing
Or the new 'Chase The Wild Goose Hostel' which I have spent the last year setting up. The only 4 STAR hostel in the area, and right next to Neptune's Staircase on the Caledonian Canal /forums/images/graemlins/smile.gif