My stay in the butler room was impressive. Better than even St. Regis butler rooms, however, St. Regis was for pleasure so I had less need for the services.
When I checked into the Park Tower the room upgrade was already reserved and arranged. Upon arriving in my room there was a small dessert sampler waiting with a bag of chocolates, YUM!. Five minutes later the butler stopped by my room and offered shirt and suit pressing, and shoe shine. She said I could get this service for one shirt, suit and pair of shoes each day.
Even with all these amenities, I still prefer the Le Meridian Piccadilly. There I had an amazing suite and the gym was much better, IMO.