The 'wholesalers' in the Wake county NC area (the few there are that I've interfaced with,) for the most part, are clueless.

The cons of podio is that the interface is not visually appealing, but it is very practical.

There's channel manager, for example, that would link Airbnb, VRBO, and all the different platforms together to prevent double booking and to have one seamless interface.

It worked OK but I didn't love the interface.

I tried using Wave when it first came out and loved it (because that was before Mint did personal & business), but then Wave "upgraded" it's interface and I found it difficult to use after that.

Plus their interface & app are just so dang user-friendly.  

So I would say that zillow is useful enough at least to someone like me.I've tried redfin but find the interface less than intuitive and don't really believe it gives me the information I like to see when evaluating deals.btw: I use realtor.com, hudhomestore, hubzu and homesearch for finding the homes.

The challenge in the space if you either pay for a company’s excessive marketing budget or deal with some seriously awful interfaces that are common in the legacy enterprise software space because traditional short term rental managers were large firms that required managing hundreds of rentals at a time and could pay a full-time person to just sit there and learn the software. 

It sounds like you should hire a property manager and not interface with tenants. 

At the time, they were not a good fit for my business since they didn't provide all the features that we were looking for and their interface was a little confusing to use too.