BUT a slippery slope is a slippery slope, and Google would be opening itself up to hundreds of thousands of suits if this one succeeded.
HOWEVER, there are still two options open to him:
1) Embark on an aggressive SEO campaign to link his guesthouse/campsite's name to nice images (though this may be exceedingly difficult)
2) Change the name of his guesthouse/campsite (very annoying, but certainly feasable)
If I were him, I'd change the name.