Same as what Jolin said, my friend was alright with her confinement lady using the washing machine for washing her own clothes. Requested for baby's clothes to be hand washed. She had fans in the room for the baby and also for the confinement lady. Unless the weather is really warm, she seldom switched on the aircon in the room the baby is sleeping in. Her confinement lady did not request for it to be turned on as well.
Her clothes separately is fine, but baby clothes, i prefer hand wash, baby clothes is very easy to wash, don't really need machine wash. If the weather is hot, and baby is sleeping with the confinement lady, than see whether you want the baby to sleep with air-con or not.