This apartment is located on a quiet street but is only a minute from stops for the number 28 tram (also the 734 minibus, which is much less crowded, and there are other buses which stop at nearby Sapadores to get to/from Santa Apollonia train station), plus a Pingo Doce supermarket. It is on the fourth floor, so there are a lots of stairs (around an open atrium with spindly bannisters, which tested my dislike of heights) but the climb is worth it for the view across multiple rooftops to the Tagus, and the outside terrace, which is a delight. Yes, there are building works right outside, but they are not intrusive - and they don't work weekends.
The interior is crammed with souvenirs of Sebastien's travels, but also has a fairly well-equipped kitchen, a proper table and chairs and a very squishy sofa (which we think is a third bed). The washing machine handle had broken, so we had a frustrating wait of almost 24 hours for confirmation that it was working and instructions on how to open it with a knife - not quite the sort of quality amenity we expected. But we did manage to open it and it washed fine. The bed was a bit creaky and the bedroom is tiny so the bed is against a wall, not great. The wifi and shower both worked well.
Overall, we enjoyed our stay, although it was rather overshadowed by the washing machine issue, and the terrace really is wonderful.