Kafein is like that local place that feels comfortable and familiar. I love how it turns from a cafe on top to a cozy bar on the bottom. The coffee and drinks are both strong. It's the best place to sit and have a long chat on a rainy day. I would say if you are looking for a study spot, I would try elsewhere because the music and ambiance tends to be on the loud side.
Tip: they often hold trivia on Weds nights, Karaoke and live music so check their fb page for events.