2.5 stars.
Avenue Diner has clearly been around for a long time and tends to cater to an old-regular clientele.
This place gets points for great ambience and friendly, attentive staff. It's an old-school, classic diner featuring burgers, shakes, breakfast items, and sandwiches. The staff were polite and kept our coffee cups filled.
The food, however, just wasn't great. We ordered the cheeseburger, club sandwich, and a side of fries. The fries were straight out of a grocery store freezer bag and the burger patty was dry. It was all reminiscent of a mass-produced junior high school cafeteria lunch.
There aren't a lot of restaurants around Avenue and Davenport where you can have a relaxed meal without much fuss, and this was a refreshing change. If only the food was better...