Airbnb currently allows check in for weekly rentals to begin any day.  You need to set your check in dates on your calendar.  

 

I found in unnerving when I was an Airbnb guest to be charged an additional fee for heat when I stayed at an Airbnb in Malta.   The payment had to be made in cash after we arrived.   

 

I suggest you include your utility costs in your rental fee.  Estimate the amount  based on a high average and add that to the daily or weekly rate.  

OR

list the total week’s estimated heat / utility charge under “extra fees”.