I love Firefly. This is one of the few restaurants where I have a hard time ordering because I love so many things on the menu.
The sangria is great. It's an absolute must. I love both the white and the red.
When it comes to food, you pretty much can't go wrong, no matter what you order. And despite being tapas, the portions are actually pretty generous. Because there are so many options, I try to change up my order every time, but I always bully my friends into sharing an order of the fries (which are amazing).
And if you somehow manage to save room for dessert, the banana nutella sandwiches are highly recommended.
My only complaint is that it can be a little bit loud at times.