At more than 100ft high, the garden gives a stunning view of Nelson's Column. 'It's great, isn't it,' he enthuses as his photograph is taken. That done, we retire to the bar, where the drinks list offers a bottle of Chivas Regal for £120 - £100 more than you'd pay at the supermarket. The bar is also full of glamorous young people. It is obviously a different type of Hilton - rather more 'trendy' than perhaps the traditional Hilton image?