Booked a non refundable stay at Renaissance Warsaw Airport for April, i just spotted that they charged my VISA credit card in GBP instead of PLN which was the currency i authorised via Veryify VISA, so cost of stay is 4.69% more & puts the stay more expensive than Expedia, sent in a complaint with screenshots a week ago, no response, just emailed the DGM.

Went back and looked at my stays at this Hotel last Year, they pulled the same trick