This is a good value. It is the walk-out basement of their house (there are full windows in every room except for the kitchen and bathroom). The place was clean and adequately furnished, including a fully furnished kitchen to make it easy for us to manage our kids. It is a reasonable distance (10 minute drive on surface roads in most cases) from Old Quebec. The air-bnbs in and around Old Quebec were far more expensive and inconvenient to keep our car so this worked out well for us.
The play ground and water park near by is a bonus. We did not use the swimming pool much because by late August, the water was already getting cold, but it's certainly a plus in the middle of the summer.
Also, Lucille and Roger who live upstairs, were helpful when we needed anything.