Nice contract! Real challenging. I played it but I was spotted due to damned head-turning and somehow killed a non-target.
Edit: I replayed it and got SA. Poisoned Lepardo Nigro's coffee, threw a kitchen knife into Claudia's brain, shot Francesca De Santis while she was rummaging through Silvio's belongings, electrocuted the guard and blew up Silvio. Fun contract.