The Swede made his long-overdue Gunners bow against West Ham earlier this week and admitted to enjoying himself.
To compound matters, the Swedish midfielder has suffered injury problems that have kept him on the sidelines for the majority of his time in North London.
However, Kallstrom made his Gunners debut in the Premier League on Tuesday night, and played his part in Arsene Wenger’s side beating West Ham 3-1.
The Scandinavian admitted that it was good to get back playing and that he enjoyed his first taste of English football.
"It was fun to play, it was long since I did that,” the 31-year-old told Expressen.
"It was truly fun to get to play 90 minutes and terrific to won. It is obvious that it feels very good, you play together with very skilled players here.
"Of course, it feels good that you are starting to play your part. The more playing time you get, the easier it becomes to get into it."
Kallstrom is on loan at the Gunners from Spartak Moscow and it remains to be seen whether Wenger will look to make his move to England permanent this summer.
With other midfielders suffering from injury concerns, having Kallstrom available for the run-in will give the club addition options in the centre of the park.