My son and I ate a very late lunch at Loaded Pierogi on 7/3/16 after walking around Toronto Islands -- we had taken the ferry back and were looking for a place that was open in mid-afternoon on a Sunday. We discovered Loaded Pierogi on a side street east of Toronto's central business district and were one of the few customers there. We had mushroom pierogi (me) and onion pierogi (my son), and sampled their beers on tap. It was all delicious. Go there for the food, and the drinks are worth it.
The place itself is fairly dark -- not much lighting, and dark wood paneling/black slate (sorry -- chalkboard, not stone) in the bar area. One of the more interesting parts of the dining experience was the server. I swear she was the most dour, unhappy server I'd seen in Toronto. She was perfectly professional, but obviously not happy to be there when it was a gorgeous day and there was no way our tipping could make up for the slow numbers. Fairly realistic attitude, I'd say, and as I wrote above, perfectly professional.