The booking was a disaster. Upon arriving at the accommodation late at night (as previously confirmed with Christel on the same day), we discovered that the place was occupied by a different guest. Apparently there had been a double booking. After about an hour, Christel (who seems to be based in France, not Lisbon) told us to go to a (incredibly expensive!) hotel, as it was the only one she could find that still had rooms available, promising she would refund the room later (I have this in writing). The next day, she told us Airbnb was going to handle the rest. Unfortunately, Airbnb is not able to refund the Hotel room, and Christel is no longer agreeing to keep her promise. We will likely never get the 234€ we spent on that hotel back, despite Christel's initial promise to refund it. She was not even prepared to pay for the difference between the hotel price and the original price of the stay.