There are 5 Premium Plaza Lounges at the YYZ airport. This review is for the one located at Terminal 3.
This is one of the better airport lounges I've been to. Very large lounge with plenty of seating space, a couple LCD TV's playing CP24 news and plenty to eat and drink.
Both times I've visited was early morning, and they have lots of offerings to sastisfy the grumbling stomach. Scrambled eggs, sausages, a small salad bar, cereal, and yogurt amongst a number of other things.
Drinks were self serve in a fridge located in the middle of the lounge, alcoholic beverages are not offered until later in the afternoon so I didn't get a chance to see what they had to offer.
Overall one of the better lounges out there, great staff, always clean and the food options are always appreciated.