This place has/had good food as the other reviews suggested, nothing extra-ordinary, but always good. What made the Senator special for many years before I learned to appreciate it and the few that I did, was Jazz.
This was an amazing Jazz joint, unlike any other I have seen in Toronto. It seems that this scene is very quickly dying in the area in Toronto that is giving way to cheap, Times Square- like feel with tons of standard restaurant chains such as Milestone and Johnny Rockets.
Toronto culture will miss the real Senator:
http://www.georgeevans.ca/pr/pr/star-senator-sybil/TheStar-Senator-Farewell.html