First of all count yourself fortunate to stay in Christine's place! So many people have talked about the cleanliness... it is no exaggeration. Her place made me want to clean my home better.
The location is really quite perfect to a lot of things you will want to do in QC. Vieux QC is within walking distance. Further, there are excellent restaurants (Cambodian, Cuban, a pâtisserie, and pizza) within footsteps of the door. There are also several markets. I would definitely stay here again! Just one caveat... the steps, be ready. I'm an overpacker and stayed in the top unit. Still, the steps made feel better about my overindulgences at the restaurants.