Hotels are full of security cameras these days. That's perhaps why the assassination victim thought he could travel to a hotel safely even though he surely had deadly enemies. The story, which is worth discussing among hackers, is how the assassins circumvented the security cameras to operate in what was, as it appears, a foreign country for them.

After edit: this quotation from the submitted article, "The door on al-Mabhouh’s room was latched and chained from the inside, and there was no blood evidence," shows more tradecraft than I have for leaving a modern, secure hotel room and ensuring that the assassination scene will yield little evidence and not be discovered at first.