Sofia doesn't have a bandage on her cut hand while she's playing, but later when she's in the cafe, she does.
Sofia has one earphone in her right ear when she is in the lift after Veronique reveals her secret scent. When she enters her room a few seconds later, the earphone is in her left ear.
When she enters her apartment, neither earbuds are in her ears.
At 59:37, Niall is shown from his left side as he drinks water from a stack of ~8 cups (with no explanation for the extras). At 59:41, the camera switches to his right side, and he is now holding a single cup.
When Sofia is in the restroom, she reaches unerringly to the flush lever on her right, as she's facing the toilet. Nearly all toilets have the flush lever on the opposite side.