Are their listings detailed with good-quality photos?

I will have to recheck that statement now that we will increase our rents another $10.Have done a deal analysis on land near an "A" location. 

@Roy MitleYour post may be omitting important details, so my answer is based on what you shared.

Appreciate your detailed response ! 

Because property management is very nuanced and detail oriented and *highly specific* to the location (down to the neighborhood), property type, market condition, expectation of landlord, available local resources, etc., etc., etc.

Learn which version is right for you in this detailed QuickBooks Online plans comparison guide:- QuickBooks Online Simple Start: Have employees and issue invoices regularly- QuickBooks Online Essentials: Assign hours worked to customers, track bills due, and provide access for up to three users- QuickBooks Online Plus: Best for retailers, wholesalers, contractors, and other small businesses requiring property cost, inventory tracking, budgeting, and access for up to five users- QuickBooks Online Advanced: Best for small and midsize businesses (SMBs) seeking fixed asset accounting, advanced reporting, custom user permissions, a dedicated support manager, and access for up to 25 users You can use it as a property management software to track lease dates, record maintenance request and moreNothing is confusing to use if you learn it.

Zillow was severely lacking and Apartments(dot)com seemed somewhat cumbersome to navigate their CBR, although it at least had good/complete details. 

I'd ask for their trailing 12 month income statements (a T12) and a current rent roll to start your analysis

Keep a detailed record of your attempts to reach them and their responses (or lack thereof).

This may seem obvious, but ANALYSIS PARALYSIS.This is the #1 issue I see in new investors.