I LOVE the Perk.
I love that it's off the main drag and a bit of a hidden gem usually only frequented by locals in the know. It's quaint, friendly and charming. Now, the caveat...you have to like children to appreciate this place (most times). There are usually many at-home moms and their kids here or, as Jimi notes, some breast-feeding action going on (I am one of them). This volume of kids means that there could sometimes be stroller traffic and a higher volume of little voices that some may appreciate.
The food is surprisingly delicious. The Sunday brunch is quite gourmet with the eggs Florentine stealing my heart. Great quesadillas and grilled cheese too. Coffee is tasty as is the large selection of desserts all very reasonably priced. Their muffins and soups du jour are always great. The service is decent given it's usually 1 person out front and 1 prepping the food in back so it's not amazingly fast but respectable.
My only beef is the fact that it's cash only which sometimes catches you off guard and give that it's in the middle of Riverdale and not on the Danforth, proximity to a bank machine is not good (Convenience store next door has an ATM...and is usually open).
I am happy to live in a neighborhood with a unique and lovely little place like this :)