Hosthub is able to sync only 1 availability at a time. In other words, once you get a booking from each channel, we should totally block the dates in all other calendars. Otherwise, our system must watch the 'Rooms to sell' field every single second, which is kind of impossible at this moment.

So it would be best to separate the rooms and publish each unique listing under the core Hotel ID. 

Let me know if anything is unclear. 😊