The room is part of a guest house with 6 rooms, where travellers come and go flexibly, and share the kitchen, living room/TV, bathroom.
The host responded quickly to messages, and otherwise, I could self-manage everything and enter with a code, and exit by leaving the keys in the living room, excellent!
I found the room and apartment stylish and clean, and the location great for visiting Lisbon, and it was only a quick ride by metro from the airport. The house looks historical and has a nice antique atmosphere, which I loved.
My only worry was that I slept about 3-4 hours. I woke up each time a guest come or left, shower, toilet, hair dryer, kitchen... I suggest bringing ear plugs, as another review suggested, but I forgot.
For an easy stay, I also suggest reading all the descriptions carefully: website, messages, on the door, to not miss anything. So even if you are in a rush or tired, rather stop on your journey for a moment, and read the texts carefully to be able to respect all the rules for the stay.
All in all, a great airbnb guesthouse, and I can recommend.