We had a great stay at Felix's spot. The apartment had everything we needed to be comfortable. It was very clean and looked exactly like the pictures. I particularly loved the local guide they provided - in both French and English - with their favorite cafes, bars, and restaurants.
Location was great for us. 20 min walk to Old Quebec, but a 5-10 min walk to the trendy bars and cafes of St. Roch. Parking wasn't difficult, but I would plan to park in a nearby garage, and then keep an eye out for street parking. A few nights we were lucky get snag street parking right in front of the apartment. The local guide provided has extra tips for parking which was super helpful.
I'd 100% recommend this spot!