Serena's place is a really great spot to discover Roma in a nice and quiet neibourhood. She was really welcoming before and during our stay (a bottle of wine was waiting for us in the fridge) and flexible with us on the check-in and out.
The apartment is close to subways (10 min walking) and super close from many bus stops which will take you to the center of Rome but also to the Ostie's beach. You can also walk to the Vatican town or take a bus (10min).
Concerning the house : full equiped in the kitchen to cook a little bit (even though there are lots of place to grab food around the apartment !) and the rooms are big.
Anyway : thank you Serena and dear AirBNBer you can book it without any doubt !