Lucky the weather was on your side Hong. I got to the bottom of the air-con scenario - it is working perfectly - the previous guest had switched the power OFF on the outside fan unit. I am sorry I didn't notice this prior to your stay. At least I know what to look for now!
Two pigeons took up residence during Trish & Shelley's stay - I did not know of their existence until Trish & Shelley were soon to check-out - they are being dealt with by my body corporate immediately. I am sincerely sorry for the inconvenience they caused Trish.