Sheraton Park Tower -
award stay on 8/1 as Gold
received comp upgrade to Butler room with great view, champagne for welcome drink, didn't take advantage of free pressings, did get free a la carte / cooked breakfast. one of the items was scrambled eggs + sevruga caviar for 25GBP. also free bottled water in bathroom was a nice plus. only paid for tip and water at breakfast, and for phone calls. about 5,5,1 GBP respectively.
location was fantastic in knightsbridge, across from both the mandarin and the tube stop.
overall an absolutely wonderful trip.