The only real risk is temporary expense and inconvenience if a tenant turns out to be bad. Even if it's not possible to eliminate that risk, there are various

The only real risk is temporary expense and inconvenience if a tenant turns out to be bad. Even if it's not possible to eliminate that risk, there are various not particularly challenging ways to minimise it. On a return-for-hours-worked-actively metric, being a landlord can be extremely easy. And you can trade off money for more time by handing over more or less all of it to agencies and/or informal support.