"What a night!" is an English equivalent of the Italian phrase Che notte!
Specifically, the exclamatory che means "what." The feminine noun notte translates as "night." The pronunciation will be "key* NOT-tey" in Italian.
*The sound is similar to that of the English exclamation "Hey!"
Che Bella notte.
Che in Italian means "that" in English.
"What" in English is Che?, Che cosa? or Cosa? in Italian.
"What was that?" in English is Che cosa era? in Italian.
Che bono che sei! in Italian means "How attractive you are!" in English.
Che cosa
"Yum!" in English is Che buono! in Italian.
"What will be, will be!" in English is Sarà quel che sarà! in Italian.
"It is what it is!" in English is È quello che è! in Italian.
"Of course not!" in English is Certo che no! in Italian.
"How pretty!" in English is Che carina! in Italian.
"What is...?" in English is Cos'è...? in Italian.