The former Fulham and Reading full-back, who joined the Tigers in 2010, now has almost 100 games under his belt and feels things are going better than ever for him at Hull following their promotion last season.
"I'm enjoying myself but I've always said it since before the manager came here that I think my game is suited more to the Premier League," Rosenior told the Hull Daily Mail.
"I'm up against quick wingers and I like to defend one versus one. Maybe those sort of qualities aren't seen as much in the Championship, where the ball is always up in the air.
"Here I'm able to show I can defend up against good wingers and show my strengths in a better way. That's maybe the difference for me now.
"But I know if I let my standards slip I'll soon be out of the team, so I'll keep doing everything I can for the club to make sure we stay in this league."
Despite enjoying his season so far, Rosenior admits that he can improve.
"I'm happy with how the season is going but I know I can still do better," he said.
"I'm never going to be content, I can always improve. That'll be the case until the day my career is finished.
"My long-term aim is to be a Premier League player for the next four or five years.
"I don't see any reason why that can't be the case so long as I stay fit. With this club and the players we've got here, I know I've got a chance of doing that.
"We're all desperate to make sure this isn't just for one season, we want to be here a lot longer."