Maybe the OP should take a look at the landlord forum ;)
What goes on with some landlords there is really mind-boggling.
Sometimes, tenants in arrears are even offered money to move out.
There is nothing that doesn’t exist there.
Unfortunately, German rental law is so landlord-unfriendly that you should think twice about whether it’s better to sell instead. Not to mention all the effort involved.
If you’re lucky, your tenants are quiet and pay their rent diligently. But unfortunately, there are also some of the annoying kind who constantly call about trivial matters and try to deceive the landlords.