We highly recommend Tiziano's apartment! It was super clean and it has a pleasant back porch with a view of neighbors' gardens. I really enjoyed sitting out there in the evenings.
We were there in July and as the days were warm, we appreciated the air conditioner. If you need to do some laundry, there is a washer/dryer in the unit. And the water pressure in the shower felt great! The apartment is on the second floor, so there is one circular set of stairs to get into it.
The location was ideal and exactly as described: a quiet street, may be a 10 minute walk from Notre Dame Basilica, and even closer to the attractions in the Old Port. It was also less than a 10 minute walk from the nearest Metro stop. If you're bringing a car, a city-owned parking garage is within 2 blocks and we found it highly convenient. Across the street from the apartment is a lovely cafe (Grand Mere) for a delicious croissant. There are also a few depanneurs (Quebecois for corner store) within a few blocks.