If you want the best cannoli in Boston, skip the crowds at Modern and Mikes and head to Maria's. Get it to go and sit by the new park across the street or in one of the few chairs outside the shop. This is not the place to linger over coffee and pastry, or to hang out for the scene, as it is a tiny place. The folks at the counter are not overflowing with warmth, either, but they freshly fill your cannoli while you watch and pack it up for you. Ricotta, chocolate, or pistachios, powdered sugar or not. Lots of other treats can be had as well, but I always go for the cannoli. Just do it - you will be glad you tried this place out.