According to Cinema Treasures and movie-theatre.org, your relative's pool hall was a movie theatre. The theatre opened between 1935 and 1960. The theatre was owned by Allied Theatres.
The spare concession stand that was located where the auditoriums are is under going renovations. The concession will get new counters with beer taps. The main concession stand may get renovated in the new year.
I sometimes go to the Sanderson Library at Bathurst and Dundas to relax and read e.g. local history. Fortunately, there are no vagrants and the insane defecating on to the books.