the cause of Elise's death can be implied from the following sentence in one of the news articles you can find through google:
Law enforcement sources told the Times that a locked door and fire escape are the only ways to access the hotel's roof.
The door, which only employees can reach, is also equipped with an alarm that notifies hotel staff if someone is up there.
The water tank is also hard to access requiring authorities to work well into the afternoon to remove her body after a maintenance worker discovered it on Tuesday morning.
'The location of the water tanks is very small and configured in a very tight way so it's a little more difficult to get the body out,'
Read more:
http://www.dailymail.co.uk/news/art...nadian-tourists-body-weeks.html#ixzz2TZyZO06H
I have not followed this thread from the beginning so my guess(which I'm sure has been posted earlier in this thread) is one of the hotel or maintenance staff is the culprit...since only they have the keys to open the rooftop door, probably a big or strong guy since he had to lug elise's body up the water tank.
on a different note, I noticed that Elise was pressing all or at least 3 or 4 of the elevator floor buttons(e.g. floors 2,3,4,5 buttons), assuming the
contrarian position that she did not take drugs, why would a lucid or drunk person press several floor buttons in a row ?? one obvious reason is so it would stop at each floor, then you notice, the elevator door does not close which means she keeps pressing the "open" button so the elevator door will not close, its like as if she is waiting for someone.. her actuations can also be interpreted as a drunk person flirting with someone(when she was peering out of the elevator, was she peering flirtatiously at one of the hotel staff at the receptionist desk or the hotel entrance or hallway ? just stating an alternative view(no malice intended)
whether she was flirting or not, whether she was under the influence of drugs or not, the one inescapable fact assuming the above news article is correct is that the
culprit points to being one of the hotel or maintenance staff unless a guest or she herself bribed or cajoled one of the staff to open the rooftop door.
on one more note, does the fire escape open when pushed then triggers a fire alarm ? if so then this is one way elise could go up there voluntarily by herself then when staff went up to check they could not find her since she might have hid up there before she went into the tank(assuming the alternative that she dove into the tank by herself(which is less plausible to me than this death being an "inside job".)