I appreciate it's frustrating when a host doesn't leave a negative review about a bad guest, but I also understand why it happens. When a guest stays, they have the opportunity to 'case' the joint, ie windows that can be easily opened, or doors that regularly stay open. If you're a single woman, the fear of retaliation is prominent in your mind, and aggravating a guest who has already displayed an uncaring attitude could prompt retaliation. Self preservation becomes the priority, and you just want to forget the experience and move on.