If you like Hart House at the University of Toronto, but are also looking for a great chef and a 'different' ambience than one of the halls, we've had a couple of weddings lately at the Gallery Grill at Hart House. It's housed in the old Faculty dining room, overlooking the Great Hall. We're having a wedding in the intimate grill area later this year, in front of the Fireplace, but this event was in the dining room. You can have a reasonable number of people - 30-60? Just ask them - esp if this is a seated dinner, which is usual. But it's best with under 50, I'd think. You also have the front bar area for cocktails, and then the dining room for the dinner. So, about the same size as the Wedding at Frank at the AGO, or at Le Select, or other restaurants we've used.
Here's a link to more pix of this wedding, and the photographer, Nuno, at StrawberryFinch.com