I've been to The Sister on several occasions. The staff have always been friendly with me.
The ambiance is kind of similar to a family style pub. In the evenings they dim the lights and you have a candle on each table.
I'm not much of a drinker so I always opt to have a coca cola.
As for the food I've eaten the Spicy BBQ, Medos, and Tangy Suicide Wings. Out of all three flavors Medos and Spicy BBQ were my favourite. The Tangy Suicide Wings were okay something with the flavor didn't quiet agree with my taste buds.
I've had the Nachos that come with guacamole, bean dip, salsa and several toppings. Even for the small size its pretty big.
The poutine here is my absolute favourite. They use lots of gravy which I love cause I'm a gravy girl. The curd is about as fresh as you can get outside of Quebec, so no squeak but I don't mind. Also I always ask for the small poutine which comes in a very large bowl. It was more than enough to fill my belly, and getting my second order of what ever I decided to order along with the poutine always ends up coming home with me instead of also being in my belly.