How do I know whether my quality tenant is being taken care of by my PM?

[Jason L.]

Let's assume:
1) I have a quality tenant who pays rent on time
2) PM responds promptly to my emails/calls
3) I live far from property so cannot drive by for first-hand look at property myself
4) I do not gather feedback directly from tenant regarding PM (e.g. survey, etc.)
5) the tenant does not have my contact information

How would I KNOW that the tenant's needs are being addressed by the PM? 

On the surface, the property is performing well. I collect timely rent and I receive prompt communication from the PM. That's perhaps enough for many property owners. But for me, I'd also like the the reassurance that my tenant is satisfied.

But how would I ever know if the tenant happens to be dissatisfied with the PM (e.g. perhaps the tenant's maintenance requests aren't responded to promptly)?

How would I ever know if the PM is taking shortcuts instead of working hard to make sure that the tenant's needs are being addressed (e.g. perhaps the tenant has some other issue that they wish to have communicated to me but instead of passing along the message, the PM simply tells the tenant that the owner hasn't yet responded)?

Or all of these questions irrelevant, as long as rent is being paid and PM communicates great with me? (Obviously, I find this viewpoint unsatisfactory, but feel free to try to convince me to think otherwise.)