First off, we're talking about Mississauga here.
In my opinion, I think this place overexceeds the expectations that usually come with "Mississauga restaurants". It's very authentic food and atmosphere wise... okay, let's get started with the review!
Food: I've been several times, and there are three sections to Paramount. One is the shwarama/hot plate area where you can get falafels and other Lebanese hot foods such as that.
The other section is the immense sweets selection that they have - delicious and a large variety of standard Lebanese sweets.
The last section (and my favourite) is the manaakeesh section. Manaakeesh (sorry for misspelling if so) is like a mini pita pizza but with Mediterranean spices (such as zaatar or labneh) and other toppings. It's cheap - $3.5 is the most expensive for one, and you get about 4 slices per manaakeesh (think pita!) If you are not familiar w/ Lebanese food, I think this is a great experience because you can go with a few friends and order a few of these "pita pizzas" and share and taste the different spices used. It's cheap too, so it's not going to break the bank.
I've also had the "special juice" and it's delicious, but heavy!
Atmosphere wise it's a bit food-court-esque where you have to go up to the counter and order. When you do, you give them your table number and then they'll bring the food to you. It's not a "romantic" or "classy" restaurant by any means, but it's clean and the food is good.
Paramount is one of my favourite restaurants in Mississauga to go to - for new experiences w/ friends or as a regular restaurant go-to.