I really liked this place. Te Aro is in a nice little area- recessed from teh rest of the store fronts on the street. I like its charm very much.
The actual shop was very cozy inside and very minimalistic in terms of decor. It had homey little things hanging from the walls, and that was about it. The staff are okay... seemed to have a bit of that hipster/douchebag swag, but it's okay haha.
I had the hot chocolate when I was there... only because I expected great things from what my friends were telling me about this place. In theory, it wasn't bad. You could tell that they didn't use some powdered mix for their hot chocolate, but it was a little too "unsweetened" for my liking. I really think taste is all a personal preference, but it was pretty good. It also had that awesome creamy texture that instant/premade/crappy hot chocolates lack. Overall, I was pretty happy with it. Prices can be a little steep, but hey, you get what you pay for.
I'll probably come back if I'm ever in the area again. I'm interested in trying some of the food that they had there as well.