Hexagone Café is a specialty coffee shop and a torréfacteur (coffee roaster). I walked to Hexagone by myself (a super special treat) on a Sunday. The coffee was good, but honestly my favorite thing about the experience was that it was open! Most of Paris seems to shut down on Sundays.
After I placed my order, I was forgotten about and had to re-order. Mais, c'est pas grave (no problem). I wasn't in a hurry to go anywhere.
121 rue du Château