Me, I would play it in between. If she goes the extra mile, take her up on it, but don't do all the heavy lifting.
Probably inappropriate, but since we're on the subject... I'm traveling this week (I travel a lot, though not in the last four months or so). I know the "Penthouse Letters" thing is essentially the guy version of Twilight fan fiction, but... there's something hot about the sudden, unexpected nature of a lot of those stories. Like having the cute cleaning lady come in and clean your pipes instead of the bathroom. Or having the girl behind the front desk come up after her shift to "see if everything is all right with your room" (wink wink). Or, slightly less improbably, be at the hotel bar and have the woman next to you (preferably married) say "listen, you're traveling, I'm traveling, let's just go upstairs and in the morning we'll pretend this never happened".
I know me well enough and now that I am married I know I don't have the constitution to go through with it, but it's an attractive concept, to me.