Great location in the center of historical Lisbon. Literally in a walking distance to most must see places like Castelo de S. Jorge, etc. We walked a lot! :)
Convenient access to public transit nearby (metro at Martim Moniz square).
Antonio has fantastic guide printed out that helps with good places to eat, answers a lot of other questions. Anything missing for it he is very promptly answering with useful info. We had enjoyed our stay here.