We have left ours empty for the past twelve years for four months every winter, and never have had a problem.
I drain the water system, including the water heater and put pink stuff in all the traps and toilet.
I shut off all the non essential circuit breakers
We shut off the refrig, but leave the freezer turned on.
I have asked one of my neighbors if they should happen to see a tree over on the house during their daily walk to give us a call.
We live in the high country of NC where many days it is below zero, and I know that the sumps in the washing machine and dishwasher must freeze and thaw, but it never has hurt them
Life is short ! go and don't worry about it
Jack L