Congee Queen at Yonge/Steeles is one of my frequent go-to's for lunch.
Although I find their decor a bit on the tacky side, they do a decent job on their BBQ meats and snack type dishes. For actual congee itself, it's also alright, although I find Congee Wong down at Yonge/finch to have tastier congee (and around a dollar cheaper on average).
Being at a Chinese restaurant, you are expected to flag down any servers instead of having someone check on you every once in a while - not really an issue, however the restaurant is a bit on the big side and servers tend to congregate around the cashier area, so people sat at the corners and sides tend to have a hard time flagging down servers for ordering and getting the bill.
Overall, Congee Queen is an acceptable restaurant, and prices are relatively affordable. Just don't expect anything mind-blowing.