Ya, ideally like to only rent for a few months. But I think the best case will be 6 months, and not many places like a lease that short even.
When I moved out, we stayed in a furnished short term rental for 3 months. It was $1600 a month near McKnight and the Deerfoot. Great spot for learning your way around the north end of the city. I think they allow month to month rentals with 30 days notice.