I received message from host day before the trip that air condition at one room is not working. I responded back and said that I'm okay without the air conditions in the room.
However same day that I supposed to check in host wrote me back and said that apartment is not available and asked me to rent somewhere else or cancel the booking. They didn't even offered to show the place. At least I could see and decide if I'm okay to stay without air condition units in that apartment. So I strongly believe there was another reason to cancel the booking.
It was very unprofessional. I had to find a hotel in the Rome airport and pay 25% more than initial booking for the same duration!