Sounds like you got the loan and attorney aspects down.

So, don't overreact to their maintenance requests.2) A landlord should eke out every bit of life from a roof, HWH, etc. and put band-aides on it until it makes economic sense to replace it.3) Maintain to the Neighborhood!

For you, is having a 5-star overall rating on rental sites the most crucial factor for success, or are there other aspects that you consider even more important?

If the plan is for them to live in the house until they are no longer able (either they pass away or move to a nursing home), then it may be that you and your husband are paying for all of the repairs and things like replacing the roof...or maybe they will treat it as their own home and simply give you the money each month to cover all of the expenses.I'd be concerned if he has siblings to make it clear that the house is yours (though with the in-laws paying for everything the siblings may see it differently) and what happens if you divorce?

Pretty much all major components were newly installed / fitted and done to a tasteful standard (new metal roof, plumbing, electrical, kitchen, flooring, bathroom, doors, new hvac, decks, vinyl siding etc) and I have visited and walked through 3 times and even been under crawl space to inspect a repair that was previously noted on an inspection to the foundation after termite treatment which looked to be a good job.

The roof needs replaced and it would take a lot of work to make it look nice.

Describe 2 of the most interesting aspects of your career or experience:1.

Once the investor understands these three FOUNDATIONAL aspects of real estate investing, they can comprehend the creative and wealth building techniques and strategies and successfully apply them to individual deals.  

Hi,My rental property's roof is 20+ years old. 

I would highly recommend finding a syndicator who can bring you in to help on some aspect of the deal where you can bring some expertise or assistance.