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.
(..) In three hours he'll be released with our proposition. Listen to what he has to say before you do anything. What's done is done. Don't lose that famous temper of yours, Sonny. I'll wait. Your boss is dead. I know you're not in the muscle end of the family, so don't be scared. (..)1972 The Godfather