There is no power to the unit. 

It could just be some roots in the sewer line that you can have cleaned out for $100-200. 

I found out they wanted to go to Atlanta to stay with family, I offered to pay for the flights in exchange for keys and within a week I got a squeaky clean house back.But, be careful: an offer of cash for keys can get your eviction case thrown out (in Wisconsin), so don't try both at the same time.

@Jonathan MuellerHow do you coordinate cleaning the rooms and who cleans the rooms?

It’s not big, but it’s got a concrete slab and power hooked up to it.

My property manager then sent another technician who said the gutters need to be cleaned and recommended installing leaf guards around the entire duplex, along with larger downspouts and overflow guards, for a total of $3,013.

I finished your book the other day, "Real Estate by the Numbers," which has allowed me to add a few more powerful metrics to my underwriting methods.

I had bids come in to clean the building out and they were 50k plus.

There is a product you can use on flooring that works well (rejuvenate)-try that first.For most things it is the actual cost (eg cleaning) or depreciated value (eg flooring replacement). 

Like Michael said, I would use a cleaner once a month to clean or biweekly, restock the common area items (like TP, dish soap, etc), and sign up for routine lawn and snow services.