Once you have a short list, get an account with each one and run them through the wringer to see how they really function.

RTR has thousands of forum reviews on BP if you use the search function. 

A functioning STR isn't worth any more than any other condo like it in the complex.

Depending on your price point, you may not need to have brand new HVAC, electric, and plumbing--just functional and reliable.The best bang for your buck is to update colors and styles. 

Have you; checked for code violations, seen the SPD, checked crime/safety, if tenants are paying, if mechanicals are properly functioning, flood zone, etc?

@Nick CoplandHi Nick,I'll preface this with the fact that I am a long-term rental guy.. not Mid Term... but most still applies....I think the answer to your question is a function of your abilities and availability.

The lock is not functional, seems like they broke the lock.

This can be REALLY expensiveI prioritize layout and functionality, along with the most important factor: location.In the Philadelphia area, I’m consistently seeing better rental performance in the outskirts and surrounding counties compared to the city itself.When analyzing a deal—especially in a hot area—it’s important to understand the potential of the property, not just what it’s producing today.

I think ALL marketing works it's just a function of sticking to it for an extended period of time.

It's true that there is functionality in there which gives you more - access to records, owner details, detailed history etc, but really honestly for most investors, using zillow/redfin and working with a great agent is going to all you need.