This was a really unfortunate AirBnB experience. When I arrived at Walid's apartment it was uninhabitable due to reasons of cleanliness / hygiene.
There was mould climbing up the walls and windows, food and drink spills on the walls and furniture and renovation noise in the adjacent building. The furniture in the courtyard was in very poor repair and the place looked like the last guests had had a party.
I immediately contacted Walid and his colleague Joana asking for a refund so I could relocate and they refused. I think most disappointing was that, not only did they fail to offer any kind of compromise (e.g. getting cleaners in and a discounted first night), they tried to dismiss my concerns about the property.
I left immediately to stay in a hotel and AirBnB granted me a full refund after I forwarded pictures of what the apartment actually looks like. A good outcome on this platform but of course a lot of upheaval and extra expense for me during my trip to Lisbon. I could't recommend this apartment or Walid as a host unfortunately.