I'm loving this place. I've just been in twice in a four-day span and have a strong feeling they'll be seeing a lot of me in the future.
No one else on Yelp has reviewed Arte's pizza, which you can see them making in the back, and I can confirm the veggie slices are very tasty and came fresh from the oven. Both times my slices had sliced mushrooms, roasted red pepper and onion toppings with a dash of oregano. The tomato sauce had a fresh, simple flavour (like a passata) and the crust had the right amount of crispness, with a thin-to-medium thickness.
I will also mention that their pizzas are a bargain compared to Pizza Pizza down the street, by the slice or by the pie. I get a ridiculous pizza craving after doing yoga at Tula West (a few doors down) and used to hit Pizza Pizza for my fix but I'll be going to Arte from now on.
As everyone else pointed out, their gelato is also delicious. I'm having fun experimenting with three new flavours each time I go in. The dark chocolate is a standout and the peach flavour was really creamy and delicious.
The young woman and young man who've served me so far were friendly and efficient.
My only suggestion for improvement is that the outdoor seating area could use some sprucing up with plants.