The location is excellent, right in front of the train station, metro station and the bottom of Alfama... and the host is sweet, very helpful and speaks good English.
There are a fly of narrow stairs to get to the apartment, so if you have big suitcase, it's kind of hard.
My room's window is facing the station. As there is no air conditioner in the room and the room really needs air circulation, I had to open the window at night. And the noise was unbearable to me, especially the downstairs' restaurant's "chair-arrangement" late night and early morning. The chairs are all metal and they were smashed and dragged on the ground... Then there was the garbage truck cleaning up the public garbage tanks... I was woken up many times during the night. At the end, I just had to close the window, which is uncomfortable, but at least I could sleep. A few days later, when it was cooler, then it's okay.