The Grosvenor is a very expensive hotel, very "posh" too, some years ago my wife & her friend were staying there, they had to do some TV appearance work the next day (a dog thing), beer was about 4 times the price so we didn't bother. they could have had whatever they liked on expenses but all they actually wanted was milkshakes, so they ordered from room service..."one banana & one strawberry milkshake" the guy arrived with a strawberry milkshake & a banana...we always wondered what they thought two women in a hotel room wanted with a banana....