Ductless heat pumps can have up to 8 indoor units connected to 1 outdoor unit and are super efficient.

However almost three weeks later and I was supposed to get back designs for furniture and get moving and not a single contact from any phone number or their main email they work from. 

An outdoor area is also a big bonus. 

any fundamental structural ideas you would use to reduce usage of furniture?

If you don't have to worry about the flooring or furniture you could scrape most rooms in an hour or less.Make sure your home is a later model do you don't have to worry about lead or asbestos.

Weather you have left is the weather and geography, access to outdoors, which remains.

Could be a good opportunity to focus on fishing and other outdoor activities.

You likely need to replace much of the furniture in the home to give it more of a modern feel.

I was ~ $12k all in with furniture, security deposit, first month rent and maxing out my personal credit cards to get it ready with photos.That $12k provided me with an airbnb profiting me $1.4k/mo in profit.

Maybe one that fits their furniture.