Airbnb’s not-so-superhost’s last-minute cancellation cost thousands

My sister is disabled and we booked a year in advance for a course in AmsterdamMy sister and I booked a yoga and shiatsu course in Amsterdam a year in advance. She is disabled and uses a wheelchair and walking stick. We booked on Airbnb and selected a “superhost” close to the yoga studio. Six days before arrival the host cancelled because the city had stopped her renting on Airbnb. Our booking cost just under £1,700, whereas a stay in the same area for 17 nights is between &pou