Here’s a polished version that keeps your meaning clear and professional:
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The staff were polite, and the room was clean. However, there was one issue that I wish the hotel had handled better.
After a long flight, I arrived at the hotel at 10:30pm. Check-in was seamless, as I had completed it two days prior. However, when I entered my room, it was very dim and the light was flashing like a lighthouse. As a solo female traveler, I was concerned. I went downstairs and spoke to Peter, showed him the video I took, and he agreed it was strange. He promised me a new room for the next two days, as the hotel was fully booked that night.
The next morning, after not getting much sleep, I packed my things and went to the lobby, only to be told by another staff member that the hotel was full for the rest of the weekend. This put me in an embarrassing situation, as I had to return to my original room.
That said, I still had a great time in Budapest. I’m surprised by the unwelcoming room, the false promises, and the lack of compensation—especially from a hotel associated with a Michelin-star restaurant and the Solid rooftop breakfast.