Bedroom Temperature For Baby

I was told by the nurse where I delivered my baby at that 27-28 degree is the ideal temperature for an air-conditioned room for baby. So when I got home, I changed our bedroom Temperature to 27 degree and my newborn keeps waking up or feel cranky. She's placed directly below the aircon thus there's no cold air blowing at her as we tilted the flap upwards towards us instead (making sure she's not too cold). I also realized that she prefers to sleep at the living hall with my ceiling fan switched on. Is the aircon set up 27 degree to warm for her? Is it OK if I set it to at least 24-25 degree instead? Will it be too cold & dry for the baby?