I have a client in KC that rents a large home in the urban core to a social service org in the area that feed him tenants.

A PMC is the ONLY one that will deal daily with your property.Here's some copy & paste advice on hwo to screen PMCs:Recommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

@Stacey OlsonRecommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

I have a sibling who is looking to sell two single-family rental properties but is concerned about the tax implications.

Door knock, cold call/text, mailers, social media, etc. 

Handyman Contractor Insights: These will best come from interviews or referrals from social media (friends/friends of friends) that are retired contractors or tradesmen.

.: I would never give the party on the opposite end of the transaction POA over the property, or my social, DOB etc.

Quote from @Ben Russell: Although I agree the leases and the legal implications of "Mid-Term" rentals and "long-term" rentals are closly related, I don't think the leases should be identical. 

Nowadays with social media you can get a good idea of how they run their business.

Fund of fund raisers need to do a much better job including descriptions of both double promotes and possible implications for LPs investing through a fund of fund vs directly.