There is nothing particularly special to say about Ground Support's hot chocolate. It is fine. If you're on West Broadway and you want a chocolate drink, you won't regret it, but you certainly don't need to seek it out.
Really I am including this hot chocolate to make a point. That point is as follows:
Hot chocolate is better when drunk out of a ceramic mug. Period. You can take the exact same hot chocolate and put it in a paper cup, and it will not taste as good.
I don't know exactly why. But I know this is true.
BOTTOM LINE: Pro tip: when given the choice, always drink your hot chocolate out of a non-disposable mug.