City wrapped up their third silverware on Saturday, with an emphatic 6-0 victory over Watford.
It came just six days after pipping Liverpool to the Premier League title by a single point. The champions had clinched the Carabao Cup earlier in the year.
“It’s one of the best seasons I’ve experienced as a manager, not the best but one of the best for sure.
“To be for 10 months playing in all competitions. No team, including incredible teams in this country, have done this and we were the first.
“I love the Champions League, but to do [the Treble] is more difficult than to win the Champions League and we did it.
“It’s not easy for 10 months, every three days being there because when you have one bad night you are out of competitions. And especially the way we played today we were a little bit short of energy but that’s normal,” Guardiola said at a news conference.
