Moscow was voted top of the list Moscow was voted top of the list

Good news for some hoteliers, bad news for travellers on a budget; international corporate services company Hogg Robinson Group (HRG) has reported a 4% rate growth for hotels around the world in the first half of 2011 (January to June) compared with the same period last year. 

Of the 50 cities surveyed, 33 reported a year-on-year increase in hotel rates with strong growth in Asia and an unexpected boost from Istanbul.

Guests looking for a cheaper stay this year however should head to Africa and Eastern Europe, where many cities showed year-on-year decreases in rates over six months, except Moscow that is - which bucks the trend having been ranked number one - the world's most expensive city for a hotel stopover. 

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Click through to the next pages to find out which cities made it onto the top 10 most expensive 2011 list and how much an average night's stay will set a guest back: