Very nice appartment with view on the tejo in the neighbourhood of Alfama. Restaurants, Bars, Electrico, Churches etc. in walking distance reachable. The cafe vis-a-vis called "Pois" is delicious for having brunch. (but not for early birds, it opens only at 11)
Just note that you have to be fit enough to do the 99 steps to get in the appartment in the 5th floor ;-)