IMHO The profile of the perp is likely an older man 40 plus years old, strong, confident, authoritative and has some charisma
Likely a long term resident and /or a long time employee of the Cecil Hotel, possibly security or maintenance employee, both likely have Master keys everywhere at the hotel
I also believe this is possibly a copycat murder mimicking some similarities between the Black Dahlia & Dark Waters crime/movie
Only someone local in the LA area and also very familiar with the Cecil Hotel's dark, freaky past could mimic such a crime
DARK WATERS FILM
Movie tie in: In the 2005 paranormal movie, Dark Water, eerie things take place after a body is supposedly found in a water tank on the ceiling of an old apartment building. In the movie, the girl was left alone in the abandoned apartment and fell into the water tank, which Veeck had left open. He was aware of her body, which was why he refused to fix the water problem plaguing the complex. Among the paranormal oddities in the movie, is dark water leaking down through the ceiling in adjacent apartments, and the elevators not working. Fast forward to 2013, leading up to the discovery of Elisa Lam’s body in the water tank, at the Cecil hotel, ‘”The water did have a funny taste,” Sabrina Baugh, a guest at the Cecil, told CNN, which adds that Baugh and her husband had used the water for eight days. ‘We never thought anything of it … We thought it was just the way it was here,’ Baugh said, adding that black water would come out of the shower when the tap was turned on.
BLACK DAHLIA REAL CRIME/MOVIE
Although Beth Short, the victim in the notorious and still-unsolved Black Dahlia murder, has no known association with the Cecil Hotel, there are a number of startling similarities between her story -- the subject of our most popular crime bus tour -- and Elisa Lam's.
• Both have names derived from Elizabeth.
• Both were women in their early 20s, traveling alone, frequenting public transportation.
• Both of them had loose travel plans that were known only to themselves.
• They were both petite, attractive brunettes, with personalities described as charismatic and outgoing. Both also suffered from depression.
• Each one traveled from San Diego to Downtown Los Angeles in January.
• Each was last seen in a Downtown hotel.
• Neither woman's disappearance was immediately reported. Both were missing for a number of days before being discovered, dead, in a shocking location.
• And the deaths of both of these unfortunate young women has inspired enormous media attention and speculation.
http://esotouric.com/bethelisa
All is just my thought