The hotel is 'famous as' the place where the treaty was signed.
a 'famous' entertainer/explorer/athlete/politician
The hotel is (justly) 'famous for' its luxury.
(..) than I expected. Wow, I can fly. I love that one. Rainbow Unicorn. She's right there. My friend says you're famous. - She wants your autograph. - No no, Sadness. Don't bother Miss. Unicorn, okay? Sorry she's from out of town. It's so embarrassing, right? (..)2015 Inside Out