New Zealand's most expensive accommodation is in Queenstown, with a night's stay costing an average of $226, a survey has found.

The average price for a night in the South Island tourist hotspot in the first half of this year rose 14 per cent for users of the website over the same time last year.

And a 21 per cent decrease in the price of a night in Paris to $211 over the same timeframe means it's cheaper for Kiwis to spend a night in the city of love than New Zealand's adventure capital, when booked through the website.

At the other end of the spectrum, bargain hunters who spent a night in Invercargill between January and June this year would have paid an average of $119 a night, a 12 per cent increase on the same period last year.

Overall, New Zealand hotels cost an average of $171 a night over the first half of 2015 - up 9 per cent.

The biggest increase was in Auckland, where the average price of a room booked through the website jumped 16 per cent to $171 per night.

A spokeswoman said the rise across New Zealand was driven mainly by a higher demand for accommodation during events such as the Cricket World Cup.

Areas where matches were played included Dunedin, which saw a 4 per cent rise to $158, Christchurch, up 2 per cent to $167 a night, and Wellington, up 10 per cent from $148 to $164.

Other New Zealand cities with strong increases included Queenstown (14 per cent to $226), Te Anau (11 per cent to $158) and Palmerston North (12 per cent to $133).

Blenheim was the only region to experience a decrease in hotel prices, down 1 per cent to $166.

Across the ditch, Cairns hotel prices fell 16 per cent to $155 a night. Brisbane also saw a decrease, of 12 per cent to $176 per night.

The cities with the biggest price hike for Kiwis booking accommodation through the site were Washington DC, up 25 per cent to $273 a night, Nadi up 20 per cent to $255 and Shanghai, up 20 per cent to $255.

In San Francisco the price of a room jumped 17 per cent from $266 to $311 a night.

A spokeswoman for would not say how many hotels could be booked through the website either in New Zealand or worldwide.

But a quick count online revealed that Invercargill alone had at least 31 hotels, motels, bed and breakfasts, serviced apartments and motor lodges available.