Then tell them that since they informed you of this ahead of time you are offering them the courtesy of not charging them any lease breaking fees and return their deposit if they move out by the end of the month and leave the rental in good condition.

Give notice of lease infraction, odor of smoke coming from aparment and unauthorized person.. give him a notice that his lease will not be renewed.. and that if the smoking and unauthorized person does not stop you will seek emediate action for eviction action cause of lease violations.Tenant 2. photo's of carpet damage.. and take more action in inspecting the buliding, grounds, listen and look for signs of pets, and pet POOP.. and give the tenant the option to leave/ or pet leaves.. 

And, I suppose that if somebody doesn't like your unit they will leave eventually.

It's important to figure out what your business strategy is, and what your value-add proposition is.I know that folks have been successful in each one of these niches in Philly real estate, just depends on what you are looking to do (in no particular order and just off the top of my head, I'm sure that I'm leaving a bunch out): low-income rentals, luxury rentals, flips, vacant land speculation, new construction, section 8/PHA rentals, wholesaling, wholetailing, bird dogging, turn key sales, property management, construction management, financing expert, zoning expert, title expert, business procedure consulting, hard money lending, seller financing, buying subject-to, syndicating deals, 1031 exchange scout, retail sales, etc.Personally, I've set up a pretty decent rental portfolio over the last few years, that's what made sense for my investing goals and setup. 

Just for kicks, assuming the facility was full with no vacancy, after the rent increase, you’re looking at $1,080 per month, which after mortgage, taxes, and insurance leaves about $480 per month, before any maintenance, lawn care, snow removal, and vacancy.I think there is upside here if I can add more units.

Hold an open house and have a great conversation with a potential buyer that readily leaves their information behind?

@Daniel SmithUnless your grandmother has been complaining to you that she hates her current apartment, can't stand the people or what have you, I would personally leave her where she is.

PITI is another $692/mo, owner paid utilities are $350/mo, leaving the total monthly cash flow at a mere $77/mo.

I leave the modeling of catastrophic events like floods, terrorism, or the sequence of maintenance events to the insurance quants (I generally account for those major events when evaluating the macro market and would only do my analysis if the market was favorable.

Are the long term tenants leaving when the lease is up in December?