Didn't ask for directions. Searched Google Maps for "hostels near Harper's Ferry, WV." It showed the location of the hostel in question and a link to its web site. Even before looking at the web site I zoomed in and saw the path leading to Keep Tryst Rd. Then I checked the hostel's web site and saw that it gives the same bike directions.

This is a very useful and easy way to find lodging and other services near a route. Zooming in and out widens the scope of search results. I did this to find camping for a week long tour from Pittsburgh to Philly using the GAP and much of PA Bike Route S. The maps for Route S don't show possible camping options other than state parks. I ran seaches within reasonable daily biking distances from Cumberland, MD up to Route S and then towards Philly. Found sufficient campgrounds and their web sites if they existed.