If it were mine I would replace the roof, including any roof decking underneath the shingles that need to be replaced, and look into the cost of doing a ridge vent at the top.As far as the air conditioning system , you might be replacing a well built heavy duty unit with something that has a much shorter service life and instead of using freon it uses some incredibly expensive chemical . 

Pricing per unit for 17 units:Guesty - $60/monthHostaway - $35/monthLodgify - $13/monthTurnoverBnB - $6/monthI've also played with the idea of doing a combination of services to include either Breezeway or TurnoverBnB for their cleaning team systems.

This is why it's important to just keep it to their address, don't get things mixed up, have the police going by to give the tenant status updates, because it could cause the calls to be charged to your property. 

Include your logo or a professional image to build credibility, and make sure your contact info is easy to find.

The other half of the increased value would be included in the deceased spouse’s estate.Community Property StatesIf you live in a community property state, things work a little bit differently.

Does that include insurance, property taxes, vacancy and repairs?

Anyone investing in the last ten years - myself included - have had it easy.

There is some accounting included, like owner statements and keeping track of all the important numbers for a STR property...i.e. occupancy, revenue, RevPAR, etc.As for guidebooks I highly recommend going on Etsy and finding templates for hard copies and templates for a digital copy.

It's the same referral out on any business, including your own, as long as all parties are licensed.2.

@Daniel ShulerIt is possible to include owner carry financing as part of a 1031 exchange.