Leverkusen confirmed the Germany international would be moving to the BayArena back in May and shortly after that announcement they sealed qualification for the Champions League.
Demirbay started pre-season training with his new team-mates this week and has been impressed by what he has seen from the club, while the fact he will be playing in Europe's premier club competition is an added bonus.
"It could not have worked out better for me," Demirbay told Kicker. "We're playing in the Champions League, I get to play with top players, the philosophy of the club and the coaches are, in my opinion, world-class."
The 25-year-old also feels the philosophy of Leverkusen coach Peter Bosz will suit his own style of play, while he is convinced the time was right to leave Hoffenheim after three years at the Wirsol Rhein-Neckar-Arena.
"We want to play with courage, attack from the front, and play football. That suits my style of play," the midfielder added.
"I felt very good at Hoffenheim. I spent three brilliant years there and was able to develop my game.
"But at some point I had the feeling that I needed to take the next step to develop myself further. To have different players around me – a different environment."