If you haven’t been using it, try the Dalhousie Off-Campus Housing web site (can’t remember the exact URL at the moment, but go to dal.ca, click on “Current Students”, and it’s somewhere on that page). St Mary’s also has an off-campus housing web site, although it’s not as good IMHO (again, not sure of the exact URL, but go to stmarys.ca and you should be able to find it after some digging around).

Hope that helps!