I googled this Saint-Malo, just so I could get an idea of where in France it's located. Since you live in Saint-Malo, I'm going to assume you got layout correct.
Also, this old map of Saint-Malo shows the castle in the upper right (north-east) section of the city and it looks largely correct.
Big picture. Dial-up users beware.
http://upload.wikimedia.org/wikipedi...Saint-Malo.jpg