I would recommend interviewing the instructors (even if you choose one airport or company over another for whatever reasons) as the instructor you choose will make more of an impact on the quality of your training than the plane you fly in or the width of the runway, or the quality of the coffee in the cafe, or how friendly the front office staff are to you.
Points to know about the instructor...
Why are they instructing (to get hours to go fly aluminum tubes? or because they have a love of teaching new pilots?)
How long have they been instructing?
How many students do they have right now? (availability, popularity)
When are they available for instructing?
Can they instruct IFR/IR/IMC?
How many students have they soloed? what is the average hours to solo?
How many students have gotten PPL with them? average hours?
Same for IFR/IR/IMC?
What would be a sample lesson? (you're not looking for content here, you might not be able to evaluate that, as much as how do they teach, and does it match your learning style)