When I was doing my Erasmus in Milan, we usually went there for "Aperitivo".
Near to the no. 54 bus stop, it's is easy to reach and it's one of the few places where I could try a variety of good appetisers and drinks. I recommend getting a Mojito (which in many places isn't that good unless you pay a lot).
The only problem is that it's always crowded, so you should call ahead and book a table.
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