My Booking.com apartment looked NOTHING like the photos but it won’t refund my £260

Q)I’M struggling to get a refund for a studio apartment I booked for £265 that was totally different to what was advertised.

I booked the apartment in Ruislip for two nights earlier this year as it looked bright and clean.

But when I arrived it looked absolutely nothing like the photos and was filthy.
The garden displayed online was large and green, but in reality it was a tiny stone courtyard.