A big thing for me is when a place offers are great overall experience. It's not enough to just have good food, especially for places like cafe's where people hangout. Rather than restaurants where people usually just pass through quickly.
This place delivers on many levels that most bubble tea places don't.
Very comfortable seating, and cute decor. Fast internet. Exceptional food quality. Quiet ambiance.
It just feels so comfortable here.
The only potential negatives are that the menu is smallish(but the place is small anyway). In terms of milk tea there are few options. If you are a hardcore milk tea fanatic and need a hundred options for your milk tea like cha time then this isn't the place for you. They offer many other kinds of drinks anyway.
But if you need a cool place to hangout, have awesome food, or study. This place is for you.