They say sometimes the most obvious things are hard to spot. This is certainly the case with the Royal Lancaster London hotel, which is perched directly above Lancaster Gate tube station. I walked right, then I walked left, before realising the place required just a few paces to get there. I was reassured that this happens a lot and it wasn't just the blonde side of me surfacing. Following an £80 million facelift this 411-room, 1960s haunt - which even featured in the Italian Job - has been brought up-to-date. Not losing any of its swinging sixties character, the 18-storey tower block has...