@Whitney158
I don't know about your locality, but generally speaking, in most places it's legal to be nude, as long as it's not in the middle of town or something. Here, many people lay out on the beaches nude. In Germany, many of the spas require full nudity. It's perfectly legal and said to be quite liberating.
It sounds as if your guest enjoyed her stay. If I were you, I wouldn't worry about suddenly receiving bookings from hoardes of nudists. Unless of course, if within your local cultural circles, nudity is so rare yet so desirable that nudist groups would suddenly flock to any opportunity to be nude, which I doubt they otherwise have any trouble finding, if that's what they fancy.
Be happy that your guest is happy. It could be much worse 🤔