Renting an apartment in which no one lives, but you need to pay utility services is the best solution
If we are talking about an existing apartment in which no one lives, but for which it is necessary to pay utility services, then everything is different here. Renting apartments in this case will be the most optimal solution. Let it not be possible to earn millions on this, let it be a certain risk (after all, tenants are very different), but this is a great opportunity to pay for timely utility payments not from your pocket, in addition to a small but stable income.
While the apartment will be rented out, children or grandchildren will grow up, who will probably not interfere. As an option, you can also consider renting an apartment in to pay a loan for a car or mortgage. However, it is important to understand here that the payments of tenants will be able to cover the costs of a large loan only partly.