Bottas dominated the season opener after getting ahead of pole-man and Mercedes teammate Lewis Hamilton on the run to the first corner at the start.
It marks his first win since the 2017 season finale in Abu Dhabi, after bad luck and poor form at the end of the year left him win-less in 2018.
Asked if he felt it was his best race in F1, Bottas said: "I think so. I don't know just what happened.
"I don't know what to say. The start was really good. It was definitely my best race ever. I don't know what happened, I just felt so good and everything was under control.
"The car was so good today. Truly enjoyable, and I need to enjoy today."
Bottas also claimed the first bonus point of the season by setting the fastest lap of the race on the penultimate tour.
It gives him 26 points, the b