OMG, what a delicious (pun intended) story! How seductive: Italian, Italian food, and a slightly snarky, slightly insecure, totally hot Severus! Everything Harry (or I :^) could want. Your writing is so marvelously descriptive and evocative that I could almost taste the food!
One point: "Sono sicuro di poterti insegniare molte parole e frasi ci concedi un tentativo Harry?” means something about being sure he can teach him many words and phrases if Harry'll let them try. Nothin' there about a bed.....