Fabio cafe is a tiny place, easy to miss, next to an internet sport and travel agency close to the Vatican with seating for 3-4 at their little bar, but we found the most helpful and kind young man there. He was patient with our many questions about the food and smoothies. (It appears to be a healthier alternative to Italian take out pizza and sandwich shops) there is free wifi and the young staff graciously and cheerfully assisted us in making dinner reservations where our own hotelier wouldn't. See Spirito Divino, Travestere neighborhood in a separate review.
We just happened on this since our hotel was down the street, but for a friendly spot, I would highly recommend it!
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