I'm looking for a film that takes place in Germany?

I saw a movie on Netflix 1 year ago but I can't find it anymore.

It was about an American who came to Germany with a camera, (I think Berlin) she met a man and they met. They slept with each other at his home, the next day (or a couple of days later) he had to go to work and locked her up. She thought it was a coincidence and waited until he got home and the next day he locked her up again. She realized that he would not let her go.

Do you have any idea what the film is called?

Berlin syndrome (Berlin syndrome, 2017)

That's him.

With pleasure.