It's difficult to write an objective review about a restaurant you feel nostalgic about. I first discovered the restaurant in high school 15 years ago (I date myself), when they were located in the Leslie and Finch Square Plaza. At that time, they were twice the size and very busy. They have since downsized and are now located at the Cummer and Yonge Plaza.
While the ambiance and service of the restaurant are average at best, I always return to eat their baked pork cutlet on rice (joo pah fan). It's consistent and never disappoints. You probably know this already, but Cafe Arc De Triomphe is a HK style cafe (basically a restaurant serving Chinese style Western food).
Besides the pork cutlet on rice, the shrimp and potato salad is also my mom's favorite. The Russian Borscht soup that comes with their meals is good. Their sandwiches and Chinese French Toast are not bad. Like other HK style cafes, their menu is extensive, but as I said before, it's the pork cutlet on rice that keeps me coming back.
It's definitely not the fanciest or newest HK cafe around. However they have been around for ages and still have a decent customer base, which I attribute to their food quality and consistency. Cafe Arc De Triomphe makes it into my restaurant rotation, whenever i'm back in Toronto.