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.
(..) Gus, four orange juice. Here, eat this while you're waitin'. What are you gonna do with four orange juice? That's Axel Freed. He's a famous writer and professor. He just got out of the worst trouble of his life. Yeah? I had a teacher, used to bet with me. Horses and baseball. (..)1974 The Gambler