Dave's place is a great place to stay. The location is very close to the 747 bus from the airport so it made getting there and going back very easy. Everything was clean and there is air conditioning, so I never got hot. Keypad was great for easy entry and the area felt safe as there are people going home from the bus and metro lines. The only thing that was slightly frustrating is the wifi signal, but because I was only there during the night to rest it wasn't a big problem for me (could also be because I stayed during the weekday when there was less people using it).
For transportation, there's three metro lines and a ton of buses in the area which make getting all the destinations very easy (all about 20-30 mins away). If you're looking to thrift clothes Saint-Laurent Blvd is only a couple of blocks away and Saint-Denis (block you're on) is also great too. Mont Royal Ave, where all the great food is, is about one station ride away. You can also walk to check out Chinatown, Downtown Montreal, and Old Montreal. It was only about a 30 minute ride away from the Biodome which I think is the best thing to checkout if you have an extra day. Overall had a great stay here and thanks for having me.