Roxanne's place was as described in the Airbnb site.
It is located at a very convenient place (i.e. close enough to Old Quebec and in a vicinity to restaurant etc).
I have only two minor issues.
The first was how to get to the place.
Due to the current construction in front of the building on a one-way street, it was little inconvenient to park my car at a close enough location to unload/load luggage.
However, the local construction was out of Roxanne's control and I should have read the previous guests' reviews little more carefully.
The second issue was little noisiness.
Due to its convenient location (being in the middle of entertainment district) and the on-going local construction, it was little noisy.
My conclusion of staying at Roxanne's place is 4-star.
It was a good place at a good location.
Also, I think that the above mentioned two minor issues have been reflected to the Roxanne's fair rate (cheaper rate compared to equivalent other Airbnb places in the same neighborhood)