The apartment is wonderful. The stairs might be a challenge for some, but if you are planning to wander about Alfama they will be the easy part :)
The location was perfect for us (family of 5 adults) to experience the neighborhood. There is a Tram 28 stop practically right outside the door. Resturants nearby (seconds to minutes away), food shops on the first floor. Spectacular view, restaurants all around. Faint sounds of street music in the background all day. A perfect cool breeze for sleeping at night.
We felt part of the neighborhood, not just tourists.
And wonderful hosts!