Also, our cleaners will report property issues to us through Breezeway and we manage all of the repairs and consumables.  

If you routinely try to get the next tenant in so quickly after the last tenant, perhaps you can add a penalty to your lease for holdover tenants.

If forced to cure - and it will be a condition of remedy - the tenant can take action against you for damages from leasing an illegal property. 

Use a well drafted and fair lease.

- Do you send in a cleaner to clean the common areas?

We also follow-up with the recruiter or HR lead after each stay to tell them what a great experience we had with their employee and to ask them to think of us in the future when they need to place someone in a midterm/corporate lease.

They have moved out as it was the end of their lease, so does that negate eviction court?

It can be usable for both if you were vacating the units and there was a 12 month lease agreement.

Also, I'd lease out the other bedrooms for additional income as well as practice screening, leasing, and interpersonal comms.  

Yes to all of it.Definitely stay there a few days to find things your cleaners aren't going to notice.You need to create the 5 star experience from the beginning.