I discovered this cafe today, I think they opened a few weeks ago. They're in Gallaghers place, near the corner of King and Little Collins.
I had a great FW, definitely on the stronger, darker side, they way I like it. It was very well made.
Friendly staff, nice fit out, definitely worth a visit.
They're a sister cafe to Little Bean Blue, hence the name LB2.
Just watch the steps when leaving, tricky if you're not paying attention.