There are tons of charging spots that are free with parking in downtown Toronto. I am pretty sure that you will find chargers at First Canadian Place, Brookfield Place, Richmond Adelaide Centre, One York, TD Centre, and more. Generally the parking fee is about $32/day at these spots.
Pre-Covid some of these charging spots would fill up but I doubt that is the case these days.
The other advantager of these spots is that they are primo spots, often near the entrance and elevators.
These are pretty much all L2 and aren't super fast but that can have an advantage as you won't feel guilty taking up a spot after you are done charging. When I was driving to one of these spots I wouldn't bother charging at home to avail myself of the "free" juice and to lengthen my charge time.