For a 5 star hotel, there is much improvement that can be done.
The lobby was always packed with people and bags. People packing their bags in the main lobby, while you can barely walk to the elevator. At least 20-30 bags stored in the lobby.
There was always someone smoking right at the front door, instead of at the designated areas.
The curtains were broken in my room.
There was one staff member that could be kinder with someone that did not understand english that well.
My room was not ready, I was told I was going to be contacted when my room was ready, no one did…
Overall, there are many things that can be improved and that you would expect from a 5 star hotel.