What draws me here is the ambiance. It transports me to a grungy neighborhood caffe typically found in Italian small towns and villages. In other words, the place is a charmless room awash in harsh fluorescent lights. It has a couple of high tables but no seats (well, when the weather is good, they have outdoor seats). The regulars take their espresso standing, half chatting with each other, half watching whatever RAI programming that is showing on the TV.
In addition to the espresso/cappuccino/latte, I recommend the freshly squeezed juice. I don't know why, but theirs just taste better than others. I also like to get a breakfast pastry from the bakery next door.