Booking.com complaint: Full refund for no stay in a room that has nothing to do with what we booked

Booked the Fontana Di Trevi Luxury Nest for March 27-30, 2022 through booking.com. Unfortunately I have to come back to you. Again.
As I mentioned to Alaa R. from Booking.com Customer service team at the time of checkin, the accommodation was unsatisfactory and it has nothing to do with pictures and reviews on Booking.com. I believe that vast majority are fake, as long as any normal person would be shocked of what they would see.
The walls are damp, very dirty and the room looks like a prison without natural light. The stairs are thin and you have to have the courage to go up or down them. We supposed to have city view and garden view. As you could see in the pictures we sent to you on Mar 27, we did not have any city view and the garden view was actually a tiny window with bars (like in a prison) with a view to a wall and a trash bin. I have to mention that the room was on the ground floor.
I contacted the property right away and let them know that conditions are unacceptable. The owner told that that if we do not like it, we are free to go, but we will lose all the money.
We left right away and we paid again accommodation to another location.
I am a frequent traveler and I am using booking.com a lot. I have to admit that out from hundreds of trips in the last 15 years, Fontana Di Trevi “Luxury Nest” is “standing out as a total disaster. A place where no man could live. Not even 5 minutes.
I just want my money for a no stay. And I won’t stop unless I am getting my money back. 100%