We have stayed at the Hotel Cour du Corbeau in Strasbourg a couple of times. Just a couple of weeks ago, I ran across this historical postcard, showing the building in its former stage.
It might be safe to assume this postcard is from around 1930, because this was the year the Cour du Corbeau was listed as a historic monument.
For more about its history, visit MGallery Cour du Corbeau
For a more contemporary one, you can read my blog post: 24 hours in Strasbourg