I recall it was kind of in the lobby of a shared office space at 251 Bank; probably not too hard to visit but I would e-mail ahead (especially these days). Seems like the have some good neighbours like Citizens for Safe Cycling, Bruce House and Circles of Support and Accountability :)

I think I was there for a Pride Week kids' craft and story thing, because what better location for that? (And Ten Oaks was in the building at that point).