It was ridiculously short notice, I was told to isolate on Sunday and was supposed to be there Monday. They've said I cant have a refund but can reschedule and to contact booking.com who I booked from. I have tried now messaging them 3 times with no reply from booking.com, and phoned twice only to be cut off 11 minutes into queuing. I doubt I will use booking.com again going on their lack of communication.I am so sorry your plans have been disrupted. And also glad you are testing negative. Congrats on being a size or two down.
Let your Arbnb host know you can't get back and ask the host if they'd be willing to refund if they can relet the property. They may agree.