The Nerazzurri have started with four wins and a draw under the 51-year-old tactician, guiding them to second after five games in Serie A.
"You can see that Inter have an identity once more and if that is accompanied by results too then it's even better," Football Italia quotes the Argentine as saying.
"We had a great reaction to going behind. The team is united and the fans can go home happy.
"Fiorentina really pressured us in the first half, but we knew they couldn't keep that tempo up and struck at the right moment."
Inter travel to Cagliari on Sunday.