They say it doesn't matter how big your house is, and as a rule we totally agree. But on holiday...well, there are times when a nice big luxury hotel makes the difference between a great vacation and an unforgettably awesome one that you'll still be talking about thirty years down the line. Treat yourself to a night (or more!) of the kind of service that you once had to own an empire to experience: rooftop pools in Cartagena, vintage champagne in a Kenyan safari lodge, a Milanese suite with your own private gym attached, or a rooftop helicopter at your beck and call in Dubai. Sure, in the long-term, seven-star service won't buy happiness – but the memory of being treated like a king or queen for just one night is sure to bring a smile to your face long after that last air-conditioned limo ride to the airport.