Banyan Tree hotel in Bangkok is a good place to stay for a business traveller or as a base camp when exploring Bangkok. It has a great location in the heart of the city and is highly regarded for its award-winning spa. But the real reason you want to stay there is the famous Vertigo Bar on the hotel rooftop, with breathtaking views over the city and the spectacle of sun setting in the Bangkok haze. (For the best views from the room book the Premier suite or better, as those rooms are located higher up.)