They are professional scammers. The riverview accommodation I booked had a heating failure from the first day. I was forced to move to another room (no window, cheaper room). The heating was not fixed, I requested a refund. Sonder gladly promised a refund. I trusted Sonder. After that I moved to another hotel (I didn't want to stay long in a room without a window). After that, they did not reply to my messages. When I asked Airbnb to arbitrate, the refundable deadline had already passed. Sonder gives guests peace of mind and prevents them from contacting Airbnb. In the end I didn't get a refund. They lie. I will not use Sonder and Airbnb in the future.