This place is in an ideal location if you're looking to visit old Quebec and the area of the Citadel. We were about 10 minutes from there by car and the host said it was about a 30 minute walk.

The room was in the basement and the street was a quiet one at night.
The only problem we had was parking. The people living there filled the streets and signage kept you from parking overnight in some areas. While I understand from the host that this is not normally a problem, we had trouble finding a spot twice when we were looking to park. I thought this was worth mentioning just so you're better prepared to deal with it, if it becomes an issue.
I found the streets in this area of town also narrow for a van. We were still able to get around because a lot of the streets are one way - directional.