It is possible to check what booking(s) are using a particular apartment or room today with the Search – Bookings by Room function.
To access the search:
Navigate → Reports → In House Report and select the Bookings By Room tab.
Choose the property and room and click Show, all bookings that are checking in, checking out or mid stay for the room in question will be shown.
Note: this report does not take account of checked in / out status.
An example of when this report might be useful would be: a guest calls or comes to reception and says I am in room X, you can now locate their booking information with their room number only.