I've been a fan of green grotto since going to the one in Markham.
The interior is very cozy and is a good spot to sit with friends. At night it can get very busy and hard to find a seat (especially weekend nights).
I always order their Hokkaido milk tea. Its delicious!
They also give a small complimentary bucket of popcorn when you sit in.
They have free WiFi which is good if you want to sit in with your laptop.
My friends and I have been coming quite a bit and will continue you to come back!