If you arrive to Strasbourg by car, from north, south or from Germany, stay on the ring until you find the way out "Place de l'Etoile"".
From there, always follow the direction '"Cathedrale / Centre ville". It will bring you in front of the bridge "Corbeau".
Pass the bridge and stop as soon as possible. Walk to the hostel 1^st street on the right after the bridge "Corbeau" (pedestrian area).