That's a great observation. That's what I would think...if someone said they saw him with her there, that's reason for a search warrant.
As for the accuracy of the witnesses, we can't know that. A neighbor may have thought they saw JM enter his apt with HG, but if there aren't photos, it's not a definite.
I personally find it hard to believe he took her to his apt bc of the logistics of getting her back to the car, and cleaning up evidence in his home. But ifhe didn't think it through, he may have impulsively brought her back to his place, I guess. JMO
I guess we should also consider the "possibility" that resident witnesses "might" have seen Hannah with JLM at his apartment on some previous occasion. I know that's not a popular theory (that Hannah KNEW JLM) but perhaps it should be considered.