The Hotel was fully booked according to the Trade Association that hosted the symposium which I attended. I also called them and they were fully booked. I tried through Expedia and I got a booking! Great for Expedia!
Some of the delegates could only access their rooms about two hours late. The one woman had a man enter her room unexpectedly. This guy was extremely apologetic but there was an administrative blunder, the hotel gave two guests the same room, both with access via a "key card"!
I did not hang a "do not disturb" card on the outside of the hotel room, but the cleaners frequently knocked on my door from quite early to enquire if they cannot start cleaning yet.
While the symposium was in process some staff members were chatting directly outside the door. I do not know why it was necessary, because they were standing almost next to each other, but they were shouting at each other which created a irritating disturbance inside the symposium hall.
Wine and sparkling wine that should have been presented cold was room temperature.
The Hall for the Gala dinner was only ready 40 minutes late.
I had a "telephone" item on my bill of almost one hour while I did not use the telephone at all.