In my case, I have relatives who are builders (in a different state) but have good connections with subs, etc. and I am spending the time to personally review all proposals (obtaining some on my own as a check), etc. so that I am confident that the cost incurred is appropriate. 

I've been reviewing the Bexar County Clerk's website, and man...I just can't tell if they've been repaid, cancelled, extinguished etc. 

Only 38 G-reviews though, nice that they are all very good ranking but still, a rather small #.

A drafter or app can get it together but you may need an Architect or Engineer if it's a life safety review/submission. 

Great review. 

When accounting for location, the hosts that have a unique property with great reviews, service and pricing will have much much better occupancy than the hosts that think they can throw some bland furnishings into any old property and be successful. 

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

What other factors should I pay close attention to in either the deal or when reviewing the physical property?

I was not familiar with this company but reviewed their website. 

Just make sure to vet them by checking reviews and talking to references.