The Sumner
The Sumner in London, United Kingdom. 54 Upper Berkeley Street
The Sumner in London, United Kingdom. Same price as direct booking, with a 1-tonne UN-verified CO₂ offset attached to every reservation, funded by IMPT from commission.
How IMPT pays for the carbon offset
Every booking on IMPT triggers a 1-tonne UN-verified CO₂ retirement on Ethereum, recorded against the booking ID. The offset is funded from IMPT's commission, not from the room rate — your price matches the property's standard direct rate.