In three years with Airbnb I've only had one inconsiderate guest.
In three months with Booking.com I've had three - and a damaged / unusable microwave, police turn up, complaints from other guests and makeup shavings over the floor and trodden in throughout the property.
Reviewing guests, in my opinion, is something that Booking.com could adopt to great adavantage and complaint minimising for them.
I'm in a similar position and have bookings still to serve. No payment from Booking.com is disgraceful and crippling. Airbnb is much better in terms of looking after their accommodation providers so suggest you think about them too as a back up plan. If someone books for say seven days you receive full payment after they have stayed for only one night. Much better system. They also bend over backwards if there is any issue too.
I'm in the same position. Spoke to someone eventually at Customer SErvices who couldn't do anything and they tried (whilst I was on the line) to get through to Finance number.
Like you I am concerned about their going into receivership and thinking that the press might be able to help / interested.
Getting ready to cancel future bookings or at least contact future guests to let them know of the situation.
Any thoughts or suggestions welcomed