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.
(..) Sit down! November , . That was when. MARTY: November , . That was the date I went back... That was the date of the famous Hill Valley lightning storm. You know your history. Very good. BIFF: I'll never forget that Saturday. I thought you crashed into a manure truck. How do you know about that? (..)1989 Back to the Future Part II