The shower was broken, the air conditioning not only didn't work, but it heated my room up 5° C. Didn't realize until I was back for bed, and wanted a good night sleep so didn't want to leave me window open.
Got woke up at 7am by the paper thin doors and walls paired with the loudest maids I've ever heard in my life. I didn't know cleaning involved so much slamming of things. It sounded like they were in my room banging around for 5 hours (7am-12pm).
It also didn't help they decided to rip the floor out of an apartment across the courtyard around 7:30am, but the only complaint I can make there is that the hotel has terrible sound proofing