As a attendee this building is great. Their parking lot is huge even though it fills up (about $20 a day, but you can find parking across front street for $15). Washrooms (and the whole place in general) are always clean. Amazingly easy to get to via TTC which is a huge plus.
The food that's available has gotten A LOT better recently. Food Dudes (yes the food truck people) is now an official caterer here, and they've worked out the problems that were preventing them from bringing food trucks into the building in the past. So at your next event here be sure to check out the food section for the trucks!!
If you're looking for a place to stay the Intercontinental is directly attached to the MTCC for easy access, but since the IC ain't cheap there's also a bunch of hotels nearby.
Minus 1 star for not having public wifi. In this day it should be a standard in consumer facilities, especially in this place where the basement gets shoddy reception.