This place was not quite as nice as I had hoped. Before I explain why, let me say that if you stay here, you will certainly be fine, and have a good time. The location is absolutely perfect: a few minutes walk from the walls to old town, on a hip street, with great stores (used books, organic food, local wine) and bars and restaurants all within one block. The deck is very nice, and looks out over the very nice courtyard dining of a fun restaurant. (Note: the restaurant gets progressively more boisterous until about midnight, so you may need to sleep with the windows closed.) Except for one issue with the coffee pot that I'm sure was a simple oversight, the place is clean and comfortable. The AC is loud but works well, and the washer/dryer are fast. When we stayed, there were some useful spices and cooking oils in the cupboards, which is always helpful.
So why did I only give this place four stars? Two reasons. A small reason is that it wasn't quite as pristine as the photos made it look. Maybe I didn't understand the photos correctly. Doesn't it look like there is natural light streaming into the kitchen, and that the washer/dryer are in the kitchen? Actually, the washer/dryer, and the toaster (which I could not make work, but that's my fault) and coffee maker and microwave, are in the living room. The kitchen is functional but small and gets very little natural light. The AC really only successfully cools the living room, which was an issue for us only one night (Tropical Storm Fey cooled things down after that), and there is a very powerful fan in the bedroom.
Now a large reason, which probably won't matter to you but made a big difference for us: parking. We visited as part of a road trip and relocation from Toronto to Halifax (where we are starting new jobs). So we carefully only booked places that listed parking. Unfortunately, neither "free on-street parking" nor "paid off-street parking" is entirely accurate. As I said, the apartment is on a hip street, and you should stay here for that reason. But that means metered parking. It also means that the street is closed to all traffic on the weekends. There is "free on-street parking" about one very steep block away. If you don't have a lot of stuff, the distance is OK. Because this is part of our relocation, we have our cats and houseplants with us. But I put quotes because during business days you have to move the car every hour. Finally, the "paid off-street parking" is a five-minute walk away, and if your car is more than 2 metres tall (which, since we have stuff on the roof, ours is) then you are stuck in a surface lot where you cannot park for more than 10 hours.
So, to summarize: if, like any reasonably person, you visit Quebec City sans car and cats, and if you are looking forward to being in a thriving city neighbourhood, with all the word "city" entails, then this place will be perfect for you. But we are not reasonable people, and so we were mildly unhappy.