Good place that offers great value and it is in close proximity to Lisbon's main attractions. However I wish if the room was a bit more comfortable to stay in. In my case, I stayed in Room 6 and the bed makes squicky sounds, the mattress is very rough and hard to sleep on, I had a difficult time sleeping on my first night, luckily there was a foldable bed in the room which I used as a temporary solution for my 3-days stay and that solved my sleeping problem. Also keep in mind that there is no AC and the mosquitos at night are quite annoying if not dealt with.
In the end I would still recommend Pedro's apartment for people looking for a budget Airbnb, it still offers great value despite the mentioned shortcomings.