Freaking fantastic.
I've been coming here since I was in highschool -- and then I lived in another city.
They make something called "the health nut" which is amazing.
I hear they might have to close and/or move due to impending condo development.
There is another unrelated location called Papaya Island on Queen West, but they don't make the Health Nut in the same way (it tastes different).
The Papaya Hut/Island restaurant serves other things too like tasty sandwiches, but for me their smoothies are about the best in Toronto by a long shot.
And the location is a time-tunnel trip to the past. It's awesome. Should be considered a landmark and preserved.
I'd give this place 6 stars if I could.