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.
(..) we're living, mad! They are, indeed. Sir, exactly what was all that about? You are talented, famous and powerful. Everything Horace values. Professor Slughorn's gonna try to collect you, Harry. You would be his crowning jewel. (..)2009 Harry Potter and the Half-Blood Prince