Magistrate Robert Cook denied the man's application in the ACT Magistrates Court on Saturday morning, despite the alleged victim telling the court she was not scared of the man.

When explaining his decision, Mr Cook said domestic violence was "a hidden circumstance where complainants often feel great difficulty giving evidence without feeling anxious or scared".

"That is the great difficulty of dealing with these matters in court," he said.

The accused was arrested on Friday and charged with one count of assault after police obtained surveillance footage of the incident.

According a police informant, the footage showed the man grabbing his partner by her arms, striking her in the abdomen twice, putting her into a chocker hold and then moving her out of the frame.

The incident was alleged to have happened at the Clifton Suite Apartments in Braddon on Friday.

According to a statement of facts, the woman sustained swelling around her left eye and redness around her neck.

The statement said the woman also told him the accused threatened to kill her and that she was scared of him.

But the woman, who was called to give evidence by the accused's defence lawyer, said she was "very intoxicated at the time" and did not remember telling the officer about the threat or being scared.

The woman denied covering up her wounds with make-up in court and said she had volunteered to give evidence and felt no pressure to do so.

Prosecutor James Walker said police had serious concerns the accused would interfere with the witness and alleged victim.

Mr Cook said evidence provided by the police informant and the prosecution demonstrated "a sense of real harm" and likelihood the woman may be exposed to further harm.

The man will reappear in the ACT Magistrates Court on April 14.