Marta and her boyfriend Luis decided to spend a weekend in Lisbon. They lived in Madrid, and they chose to travel by long-distance bus because it was cheaper than flying. The journey took almost nine hours, so by the time they arrived on Friday evening, they were tired but excited. On the bus, they reviewed the booking email for their budget hotel. The photos showed modern rooms with large beds, clean bathrooms, and a balcony with a view. The description said the hotel was “comfortable, recently renovated, and close to the city centre.” The location pin on the map looked perfect. “It looks ideal for two nights,” Marta said. “And the price is great.” They walked from the bus station to the hotel with their small suitcases. The street was lively, with cafés and little grocery shops still open. But…