I've been here a few times when I've had to meet people from up north. Drinks and food are good and standard, like most of the bubble tea chains.
The service though is insufferable. The servers stand around and don't seem to understand what they're supposed to do. They hide by the counter and look scared to engage the clients. You have to flag them down to take your order and once they deliver your order, they won't return. Every time I wanted something, they seemed a little surprised. It's like you have to teach them what their job is.