Sencha (previously called Steepery), has a great environment for studying or meeting up with friends. They now have a bar--which I'm a big fan of.
I am a huge fan of their loose-leaf teas--I would recommend getting a pot (saves you money).
You can also get a side of milk and honey with it. (4 stars)
I am not a fan of the bubble tea there (2 stars). The chai tea tastes like it has artificial flavoring and the times I have gotten the thai tea, I've only taken two sips and thrown it away due to the lack of authentic taste. The bubbles do not have any flavor to them and are often either overdone or underdone.