With two months to go, the "COP30 Hotel," spruced up and renamed after the UN climate conference due to take place in the Amazonian city of Belem in November, has zero bookings.

The owners had been hoping to cash in on the conference by filling all the rooms with foreign delegates.

But the hotel's eye-watering initial rates -- a cool $1,200 per night, which it later lowered to try to drum up business -- were a turnoff.

Delegations from governments, NGOs and civil society have repeatedly urged Brazil to put a limit on accommodation costs that have soared for the first-ever climate COP (Conference of Parties) to be held in the Amazon.

It is a symbolic setting given the rainforest's critical role in absorbing planet-warming carbon dioxide, but also a challenging one.

More than half of Be

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