It really doesnt matter if he confessed or not. They have him entering the hotel room with the girl and leaving with changed clothes without her. Tells the hotel not to disturb her. I dont know how much more they need than that even without a confession. Especially if there is ANY physical evidence in the room.
It could make a difference in the circumstances of how the killing came about. If it was a crime of passion, on the spur of the moment, then it might be a reduced sentence -- from something that was a planned and premeditated murder.
It would be in his interests to present it as something that "got of control" and that he was angry and in a fit of passion, accidently killed Stephany Flores, and didn't mean to.
If there is nothing to show that he intended to kill her beforehand, and even if he did drug her in order to get her there in the first place -- he could very well maintain his story of it being in a fit of passion and being drunk at the time.
He's already given a "reason" for him being angry (i.e., the girl getting on his computer and digging/snooping around) -- so that can fit in with an argument getting heated and him slapping her around and then accidently killing her.
“He’s already given a “reason” for him being angry (i.e., the girl getting on his computer and digging/snooping around)”
Bullpuckey! Peruvians are not going to believe anything this liar says and they are not going to believe it is a crime of passion! He didn’t even know this woman!!