We stayed 3 nights at 9Hotel Mercy in Lisbon, in their best room. The room itself was very spacious and nicely decorated, and the suites are comfortable. Unfortunately, the experience was impacted by two major issues: the constant buzzing noise from the building’s air conditioning system, which was noticeable day and night, and a full 24-hour elevator outage. This meant climbing six floors multiple times a day. No form of compensation was offered or even suggested for these inconveniences, which was disappointing given the hotel’s category and price point.