And it does not seem like getting it on time has been a high priority (or at least a communicated clearly to the tenant)...It is one of those crucial confrontations (as the book title goes).

I didn’t confront the person, things go bad quickly if you do, so I played dumb and told the person I wasn’t interested.

Have a frank, but cordial and non-confrontational, discussion with your tenant about smoking in the apartment and the lease is in order.  

This is her 1st year renting from us.She has paid rent late 1 (and we had to email her 2 times and threaten eviction), had her sister stay in the unit w/o being on the lease (a lease violation and we confronted her and now sister is applying) and had at least 5 times noise complaints from other renters.Should I renew this renter's lease?

I confronted my tenant as a conserned parent and explained that I first and foremost didn't want anyone getting hurt.  

In February, I confronted them about it, they admitted they were living there, and I gave them a few choices, and they decided the son and daughter would move out.

In September, I confronted them about it, they admitted the son and his wife were living there, and I gave them a few choices, and they decided the son and daughter would move out.

As the owner of the vacant unit, what is my best strategy to confront and address the matter successfully.

These people are all perfect little 9-5 worker bees who are scared of confrontation.

These people are all perfect little 9-5 worker bees who are scared of confrontation.