Leonor was a very helpful host in terms of showing where everything in her place is, letting me use space in her fridge, and answering questions about local transportation. The room was very clear, large, and nicely decorated, and the bed was comfortable. However, this was not a good night of sleep. First, there is no insulation in the walls or windows, so the very loud neighborhood (things like loud music, pedestrians' conversations, and hauling of trash til 3am) came in very clearly to the bedroom. This is just because the apartment is in a crowded neighborhood.
The hosts themselves were also loud until midnight. Their living room is just outside of a thin glass door, so the host and her boyfriend sat just some meters from my bed chatting at a completely unrestricted volume (and even a very loud speakerphone call with a friend) until midnight, when they knew I went to bed by 10 to take an early train the next day. It was very inconsiderate to not adapt their lifestyle at all to their guests' right to sleep. It gave me the impression that they are hosting just for the money, without regard for what their guests' basic needs. There are more welcoming and more comfortable Airbnbs for the same and lesser price in Lisbon, so in the future I would prefer to stay somewhere else. If you're someone who doesn't mind a lot of perfume at home and can sleep through a lot of noise, I recommend this place to you.