If you leave the property by the lease expiration date AND leave the property clean and in as good condition as you found it I will not charge rent for Jan. and I will return the security deposit in full" I made the offer contingent on them responding to my message. 

@Amanda SchneiderThey need to repair it or make concessions.You went under contract with a basement in good condition and that's no longer the case.It's nobodies fault, but the condition changed in a significant way before you closed.I would try to negotiate a concession for the issue in exchange for keeping the same closing date, just get it cleaned up asap and the repairs done after closing.Just make sure to give yourself some wiggle room in the concession amount because of the increased risk your taking on.

This could mean an extra electric bill for you and/or cleaning.- Fire monitoring. 

The fact that you cleaned everything up after the 10 days' notice and nothing had changed during that time, she hadn't paid the rent AND all of the furniture had been moved out, I would have done the same as you. 

Is it recommended to get Power Of Attorney with seller?

Conservation cuts into there business of producing power regardless of the pollution created. 

CLEAN Bakery, car dealership, and 3 mobile home pads... absolutely no rehab needed on this one!

Put a lot more money in your budget for frequent window and deck cleaning (ocean = ocean birds), any outdoor furniture and/or extras will wear very fast.

Calling a GC for a clogged drain or bad ceiling fan is like calling a moving company to clean out a closet. 

@Drew Sygit & @Evan Polaski I don't think property Mangers should be GC's when they have in-house services. like I said if the PMC employees on payroll like maintenance, cleaning, landscaping, even some admin time for court or appraisals Ect.