I tried booking for next June but could not get any availability. Are they closing for refurbishment?
Maybe it's just a bit early, we booked in Feb for July plenty of time.
I'm not sure of any plans to refurbish. I don't think it necessary. It may be just the great location of the hotel? We went in July 2017 & only booked at the beginning of the year. Perhaps there's an event on? Sorrento is very popular for weddings
Get an answer from Carlton International Hotel staff and past guests.