I agree with the need of a furnace.Most mountain cabins have hot tubs.Emergency generators aren't cheap, but great to have during a sustained power outage.I've thought a battery backup system might be a good compromise.

I would try and compromise on the cost of repairs.For you this cost would be a tax write-off, for the tenants it is not.   

If I bring the disease home, I could unintentionally kill my husband who is immune compromised due to chemotherapy.

I like that they appear to have worked out a compromise.   

Compromise as best you can.

Is there a compromise in the middle?  

Every time we deviate from this process, the outcome is compromised.1. have professional pictures of the property taken, about $100 and we re-use pictures.

I hope you can weather the storm without having to compromise your criteria. 

Life is a matter of finding compromise in that situation.

If they don't pay by the deadline the contract is void.A compromise might be reached of an earnest payment, a portion of the rent to show they still intend to move in, but if they balk at that thought, end the contract.