Well, Sonder is not someone who I would choose to be my role model, sorry.
I know a few hosts from my neighborhood who don't charge a cleaning fee and guess what - they mostly get 1-night bookings, work hard and earn close to nothing. No thank you. I prefer longer bookings, with lower costs, less time-consuming, less work and more earnings.
I would (maybe) target 1-night bookings only if my Airbnb would be a small and simple room without a kitchen and in the same house where I live, next to the airport, hospital, highway... or some other transit place where guests rarely stay more than 1 night. Then I would probably drop the cleaning fee.