I go right down to the main issue - Bed Bugs!!!
I was staying in the 4-bed-dorm at 2nd floor. After I came back from dinner, I spotted a bed bug crawling on the shorts I left on my bed. I inspected the room, there was bed bug on the blackout curtain, dead bed bug at the side of the bed, and on the floor. I'm talking full grown bed bugs. Managed to kill 2, showed them to the staff and requested to check out. They called their manager and promised to refund me but the promise has never been materialized.