All of the lounges in Canada are ok. I love the fact that you can grab a few free magazines, a free drink and a nice at your own disposal. I would like to say however, as a Star Alliance Elite member, that there are so many better lounges across Europe that offer better food. This year the Maple Leaf Lounge added hummus and pita, which is nice but still relatively cheap to make (or to plate, as I am sure its all pre-made anyways).
In the end this is the only place where you can have a snack, and a drink for free so I guess you can really complain now can you. If you have a pass to go in, make sure you do, if you don't find someone that does its great to kill some time. I would also add that they have decent wines, so if you like wine tasting the ones they have on hand is always a good idea.