This is not surprising when you consider that its Valley Wing alone offers a high level of luxury, personalised service, a minimum of 50sq meters of space and floor-to-ceiling windows (some with stunning panoramic views of the city).

This eco-chic newcomer is located in a charming brick building dating back to the 1920s.

Each of the 224 guest rooms are decorated in gentle, earthy colours and fitted with high-speed internet access and flat-screen TVs.

Though shabby on the outside, the interior looks like one of David Lean's Arabian sets, and you half expect Peter O'Toole to stumble in demanding 'bed and sheets for the boy'.

Despite the wealth of alternative options throughout the city, it sometimes feels as though the entire ex-pat community can be found around the pool for Friday brunch.

Filling half a block of the lavish Avenida Alvear, the 210 rooms offer extreme opulence: rich burgundies, antique French furniture and Hermès bathroom goodies scattered around the hot tubs.

See more hotels on Time Out Buenos Aires Hotel Felix The lovely Hotel Felix beats other Chicago hostelries (even trumping nearby Trump's) by having the city's first silver LEED certificate for environmental sustainability.

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The style is over-the-top elegance, with more marble and chestnut wood than you can shake a stick at: definitely a classy experience.

See more hotels on Time Out Beijing Faena Hotel Universe A true original in BA.

We asked Time Out's international magazine and online editors to tell us about the hot hotels – both new and old – in their cities.