I've stayed at St Regis Singapore number of times and have found butler to be useless for anything other than cleaning baby bottles, which they return steam cleaned on a silver tray.

They have managed to botch up every simple request I've made of them (other than baby bottle cleaning) which seems to be a function of poor English comprehension skills. I still don't quite get what language to speak in Singapore. I honestly get more traction with my broken Korean in Seoul than with English in Singapore.