We stayed there for two nights, the location of the apartment is perfect, if you want to visit beautiful Lissabon, everything can we reached within some minutes of walking. Our personal highlight was the balcony, it's quite small to sit, but from there you can see the Tejo and can watch the crowded streets.
Jussara was a very friendly host and though we couldn't communicate in the same language, she was always ready to help. We had some problems with the electricity (our fault) and though she wasn't in town, she managed to find someone else to fix the problems for us easily.
Highly recommended!