We had a great stay at Vladimir and Valentina's place. It's on a really lovely little pedestrian only street with some excellent restaurants (we highly recommend the French restaurant across the street, Les Deux Gamins!). The location is about a mile away from old Montreal and a mile from Miles End, so the location was great for us as we love to walk places. Vladimir also provides wonderful pastries in the morning from their bakery downstairs, which was a great surprise.
Vladimir and Valentina were also very understanding of our day-late check in. We unfortunately had some car trouble on the way which waylaid us by a day. We greatly enjoyed the time we had though!
The only issue we had was with parking. The street signs are exclusively in French and there are a lot of signs pointing various ways on the road, so it can be difficult to figure out where to park and when. We actually ended up with a parking ticket on the first day before finding a spot the next day.
Overall, though, I completely recommend staying here. We loved it and we had a great first visit to Montreal!