Their hot chocolate IS really good! I was told by a colleague to try both this and the almond croissants (almond paste smeared on either a butter or chocolate croissant) and I loved both. Though I wouldn't recommend both at the same time - that might be overkill.
I've also had the Americano. It was unreasonably delicious. And I love the little piece of chocolate on the side.
A word on getting a table: If you have a meeting, I would suggest going a bit early to snag one. This tends to be a very busy spot and they aren't always speedy with clearing tables here. But what they lack in cleanup, they make up for in friendly service!
Happy sipping.