3.5, but rounded up to 4 due to Yelp's scale.... just as well since this place is a Montreal institution. So, 4 it is!
All in all, a pretty solid breakfast spot. It really is pretty basic.... just your typical, family run diner. But, it does seem to be a dying breed nowadays, so I understand why people might rave about it.
The staff is pretty friendly, and the prices are pretty decent for the area.
If you get a chance to stop by, do so. If not, it's not really worth a special trip.
Recommend.