Talk about a perfect location! Saint Jean is lined with shops and restaurants and leads a walk straight into old town Quebec City. Definitely worth the quick walk instead of driving. Stop and peer in shop windows on your way (and any parking you find "downtown" will most likely only be 2 or 3 blocks closer than the apt already is!) Quebec City, especially old town, is one of the most beautiful and charming cities I've ever been in. Each street is a piece of art.
Take care, if you have mobility issues - the apt is a 2 flight walk up! I missed that detail when booking haha. I don't have mobility restrictions, just learned exactly how out of shape I am! Haha. Cannot wait to come back to Quebec.