"It was a happy atmosphere around the stadium, getting off the bus and of course the supporters".
The Manchester City boss said before the game he would look at their last five fixtures of the season for an indication as to how they will respond when they bid for back-to-back championships next season.
The only mar on the day for City was that their fans invaded the pitch at the end in celebration, with a flare being let off.
Asked about the potential for disciplinary action, he said: "No problem". "Football is an emotional game". I understand you have to be careful, but when they feel they want to share that they are happy, it is better they stay where they should stay, but I'm not going to tell them don't do that.
"I have to be more into them and control more the players - the time they arrive at training sessions, what they have to do with the ball and without the ball".
On this occasion, the striker's aerial prowess was on show as he struck swiftly after coming off the bench to extend his side's lead and send them into the final. The Premier League is won, now it's the record.
City dented relegation-threatened Swansea's goal difference further after half-time, first through De Bruyne's 25-yard rocket - the pick of his team's goals.
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Victory took City to 90 points, within five of the Premier League record set by Chelsea in 2004-05, and 98 goals, again five shy of a benchmark established by the Blues in 2009-10.
Guardiola has little doubt who should be crowned the victor in this evening's ceremony, telling reporters after the Swansea victory: "I know my opinion about these awards so if he doesn't win, congratulations to the guy who is going to win but from my point of view when you are analysing nine months or 10 months then there was no player better than him".
While I am disappointed for him, missing out this year will only spur him on to be even better next season.
"It is my opinion and the opinion of the players can be another one. But in the end, in summer time he will be at home being champion".
City were two-up at the break thanks to strikes from David Silva and Sterling, his 23rd goal of the season.
"It's a very nice feeling (to play like this), we wanted to perform in these games like we did all season", De Bruyne added.