Very walkable for all of the old city sights. It’s Lisbon, a lot of hills, be ready to walk!
Great food options and markets//grocery stores near by. Just outside of the main tourist area but still a busy street. $8 Uber from airport in mid day. Subway entrance in less than 3 minute walk.
Apartment was a little small(I think normal for the area, city center), but great water pressure, and pictures are accurate.