Location should get 10 stars! We loved staying at Stephen's place - we parked in the free parking spot provided and walked all over Quebec from there. We did need to use the car one day of our trip, and it was so convenient to have it right nearby on a rainy day. There is a grocery store literally next door that had everything we needed for a long weekend, including picnic lunches. There are restaurants and bars close by, but walking 5min brings you right to the busy streets of old Quebec where there are tons more options.
The shower is great, towels are nice, and there were a few nice touches like shower products provided. The bed was very comfortable, but as others have said, a bit high - just remember when you get out. Having Netflix helped us on a rainy evening, and the kitchen had silverware, dishes, and conveniences like a corkscrew.
Literally no complaints with this stay -- Stephen's place really helped make our QC trip awesome.