First, to me a hotel presents a considerably safer environment than if it were this guy's house, an industrial space after hours, or some basement dungeon somewhere. Hotels tend to have other people around, their own security staff and security cameras. Plus, for that kind of money, you could have found a massive bouncer on CraigsList to come with you, and thrown him $200-$300.
At a minimum, you could have asked for lots of information about the guy first to at least see if his information checks out as legit.
But I understand it was your wife's call, not yours. My general policy in these situations, where I'm not sure if someone is legit -- keep seeking more information -- the truth tends to emerge. There are lots of filthy rich people, and their inviting you to be there with her strikes me as something your average rapist or assaulter wouldn't do. Good luck.