Can I set up daily rentals?

Yes, this is supported. In the rules section, click the Configure time button. Then, click Add period or select an existing period to edit. Set the working hours to Whole day.

Next, open the existing step for editing and change it to the Daily step. If no steps have been added yet, click Add step.

In the resource settings, enable the Show only dates checkbox.

Another important option is the Include whole end day checkbox. If this is enabled, selecting the period January 1–2 will be counted as 2 days. If it is not enabled, it will be counted as 1 day.

Here is a demo: