Sure, here's a revised version of your review:
This is the first time in my life that I have hated a hotel. My negative experience began on the first day of my stay when I arrived at the hotel and tried to enter my room using a smart card. I had to try 10-15 times before it finally worked. Upon entering the room, I was hit with a wave of heat, and when I tried to turn on the AC, it was not working. When I went to the reception to complain, I was told that the hotel's main AC was only turned on when the manager deemed it necessary and that the air from outside should be sufficient for my needs.
To make matters worse, I also found out that my fridge was not working. When I brought it to the attention of the reception, they promised to fix it, but it remained broken throughout my 12-day stay. The bathroom was another issue, as it was filled with mold and there was a water leak from the ceiling in the shower. Even the gym was not up to par, with only one treadmill working and all other fixtures being rusty and stuck.
The final straw came when I tried to check out at 6AM to catch my flight. The guys at the reception started telling me that I hadn't paid, which caused a delay of half an hour and almost made me miss my flight.
Overall, my experience at this hotel was extremely disappointing and I would not recommend it to anyone.