Maybe get this chap at the Guardian to look into it if they don't play ball!!
This is Accor related.
https://www.theguardian.com/money/2023/jan/16/ibis-hotel-cancelled-our-booking-but-says-no-to-a-refund
Not sure if this applies (from Accor website) ... but maybe the hotel should have taken the responsibility of finding you suitable accommodation and paying for it.
"In the case of a force majeure event, an exceptional event or impossibility to carry out the Service and, in particular, making...