I'm looking to list my property with them but read some horror reviews online from guests (but not hosts). 

Check online reviews and test their responsiveness.

And most investors don't want to hear this but you have to pay for a feasibility review even though this is just a prospective property.

I am also looking at Hemlane since they offer 3 different service levels and get good reviews.

I even have a friend who received an unfounded complaint from a neighbor (the neighbor was just against STRs, no events/parties that occurred), and now their property is temporarily banned/under review, regardless of them abiding by all rules.

Does anyone have any suggestions for areas with newer SF homes offering decent cash flow to review?  

To ensure accuracy, verify comps manually by reviewing recent sales in the area, property condition, and similar features.

NCREIF produced the first property level return index, the NCREIF Property Index (NPI), dating back to 1978 tocapture investment performance records that meet the rigorous scrutiny and review of major investors and academia.What is the NFI-ODCE?

I want to add a few additional clarifications after reviewing some of the posts, particularly those by by @John Morgan & @V.G.

So, we obtain a full credit report and review collections, chargeoffs, age of credit accounts, active accounts, etc. to build an overall credit evaluation.Public RecordsWe also obtain data from national databases about evictions, convictions and sex-offender histories.