Overall a great experience😊 but the area is very trafficked.
Very close to the air bnb there is a nice street (think it was called via del pigneto) with cool bars and restaurants. We also found a cool sushi place on via braccio da montone.
Using the metro is very easy! You can buy a metro card at the stations.
From the air bnb you can take the metro (line C - the green line) from Lodi or pigneto and then change to the orange line (line a) at San Giovanni. That way you can easily reach all of the tourist attractions:)
there is also bus stops right outside the air bnb. (the metro card can also be used on the busses, so it is very easy to get around)