How many weeks before end of lease do you advertise rental?

[Aaron M.]

My property's lease is coming up for renewal at the end of June and I wanted to get a sense of how many weeks before the end of lease do you start to advertise the property?  What is a reasonable amount of time to expect it takes to lease a property priced fairly during the summer?

Also, I would appreciate any advice for how to show a house that the tenant is not keeping in good share (mainly pretty filthy bathroom conditions?)