I've been to the Terroni on Queen West before and have enjoyed it. I can't say the same for the Adelaide location.
The space is beautiful but weirdly configured. Seating is cramped for no reason considering how big the building is. I don't mind being close to tables next to me, but having the back of my chair bumped by waitstaff every time they walked by was irritating. And why is there a DJ playing house music?
Food is pretty good. Fried calamari was better than others give credit for but cried out for some kind of sauce to cut the oil/flour. I also had the Smendozzata pizza, with gorgonzola, red onions and sausage. Can't really go wrong with that.
Service was horrible and ruined what would've otherwise been a fine but forgettable dinner. Our waiter was uninterested and aloof the whole time. Nobody checked on us after our main courses were brought to the table, so we had to go without water or another glass of wine (meaning the waiter lost out on the tip two ways: a lower subtotal and a lower % tip for the crappy effort). We hurried out after less than an hour; it was just a miserable place to stick around.