Yanan's place was great. Spacious and centrally located. Near a lot restaurants, and steps away from a subway station. The Tourist Information Office is a few doors down, and hop-on buses stop outside. Short walk to tourist sites and the river. Despite the central location, the apartment is extremely quiet. Shutters over the windows effectively block light, but when they're open, the apartment is bright. It's modern and clean. The shower is large by Portuguese standards, though I struggled a bit with the hose. There is a washing machine that can handle a small load and a portable rack for drying. The wifi is strong and reliable; I made several Zoom calls and watched Netflix. I only used the kitchen to heat leftover pizza and make tea, but it seemed well equipped. Yanan is friendly and helpful.
Caution: the street is very steep, too steep for me to drag luggage up it. There are stairs to the sidewalk, but there are sketchy people on them doing drugs. Otherwise, the area felt safe.