Convention Centers can strange beasts full of dragons and wicked men peddling drinks and food for far too much money. The Palais des Congres is not one of those, but a clean and wonderfully staffed location where I've twice been for conferences (and will be returning to for WorldCon next year)
The Tim Horton's is the biggest plus. I love it and the price is right. The Convention Center mark-up seems to be much smaller than for places like Starbucks when they're put into CCs.
The place is comfortable, and when I lost a bag, I simply asked one of the roamers and they sent folks out to find it and finally they did. After less than 10 minutes. And they brought it to me in a panel I was attending! Good people.