First of all, Alexandre's place, as shown in the pictures, is a really nice little appartment close to the centre of Lisbon, which is within walking distance. There are nice cafés and bars within short walking distance (insider tip: Palma Cantina).
The initial contact and check-in process was very friendly and well organised.
Unfortunately, despite the first very positive impressions, we found mould in the shower. After we did not receive an answer to our complaint from Alexandre, we contacted Airbnb. They were very friendly, helped us quickly and negotiated a reasonable refund for the inconvenience.
Unfortunately, we have not received any feedback or apology from Alexandre so far.