Try HF Holidays Walkchamp............they have a great base in the form of a very comfortable large house near Glencoe (in North Ballachulish to be exact). They do guided walks with the comfort of dinner, B&B in the evening.
Always fancy staying there myself.
Mel is probably referring to the cruise barge 'Fingal of Caledonia'. Cruise, walk, eat, drink, sleep on/along the Great Glen Way.
Sparnel