Hello @Jyotsna1. You must create:
1. one listing for the whole apartment setting the price in such a way that you're satisfied - either a fixed price per room (whether sleeps 1 or 2) times 4 (rooms), or you break it into 1 person per room plus extra guest.
2. then separate listings for separate rooms as "private room," also with correct prices - either for one person plus fee for extra guests or a fixed price for the room no matter if 1 or 2 persons sleep there.
Then you must sync the calendars - all the private rooms must be included (linked) to the listing of the whole apartment (master listing).
Take a look at the settings, maybe snooze your listing for a moment before you sort it out.
// "The only person you can trust is yourself"