First, I assume the reason the other poster said her use of her mental illness "rubs him the wrong way" because it is unlikely Phil knew she was Bi-Polar. From her reply: "you took advantage of a mentally ill, vulnerable girl who wanted to go into games journalism." In order to take advantage of someone you have to have knowledge of whatever you are attempting to use to manipulate them. Thus, if she never mentioned her illness to Phil it is highly unlikely he "took advantage" of her mental illness.
Second, again, you are assuming a lot based on nothing but your own preconceptions. We do not know how many times he offered but based purely on her original thread it seems it was around twice. The initial offer, her response about staying with friends, and another offer to be sure. I haven't seen any "multiple excuses to get him to drop the hotel." So, again, you're injecting new facets into the narrative which do no exist presently. But, nothing about his initial offer can prove that there were sinister motives behind it. You may feel that, she may feel that, but your feelings are not fact. After all, predatory men acting upon "assumptions" are what leads to trouble in the first place.