Thanks for the feedback Raquel. The AC in the bedroom works perfectly, after you told me about this problem, I realised you had it on the program for fan only and not for cold.
There were some small roaches in the kitchen, we have had the exterminator in, and he has been treating the problem. This happens a lot in very hot countries, and its not for lack of hygiene, they enter by windows etc. But I happy to report the problem is now under control.