Siem Reap is no stranger to luxury. But the One Hotel Angkor is putting a modern spin on the concept with something the town has never seen before: a one-room hotel. Think of One Hotel, located on the Passage, a pedestrian-only lane in the heart of the former colonial quarter, as your own stylish pied-à-terre, a row house with a thatched roof and wooden jalousies that’s straight out of a Graham Greene novel. A curvaceous, king-size platform bed dominates the master bedroom. In the bathroom, everything is built for two: a doorless, three-foot-wide shower; a seven-foot-long step-in tub; and an ingenious vanity with deep twin sinks. A bamboo lamp, hand-loomed silk pillows, and lemongrass soap add indigenous touches. Guests are issued a complimentary mobile phone while in residence; order from any area restaurant, and a staffer will fetch your meal for you. An alfresco massage?Done. A private car and guide to the ruins?No problem. The best caipirinha in town?Coming right up the stairs.