Aloha,
With all due respect, on a scale of 1 to 10, with 10 being the absolute worst, I would rate yours a 2 at best, compared to turnovers I have had over the years (even without unattended death involved), and new purchases by existing Clients. Heck, I've inspected occupied units that were far worse, RECENTLY I am sorry to say! (That guy got a quick "Non-Renewal" notice, and left everything in the unit but the clothes on his back, which included some 50 contractor bags full (Tenant didn't fill the bags, our guys did!) of bottles/cans with stale beer residue/stench, which of course attracted 1000's of roaches that were in/on everything in the place.
@Bruce Woodruff had a dog house, I had a cat house...27 cats, the owner walked away to another house up the street, leaving dishes on the kitchen table and all furniture. She went down their daily to feed the cats. You could smell it from the street...
Then there was the very large woman that was a hoarder in a basement apartment. She had covered the "window" where the water company had to read the meter, so they notified us. On inspection I found newspapers and stuff stacked over my head; an overpowering but vaguely familiar odor; and a thick grey dust on everything. On entering the bathroom, I discovered the powder, and the odor, were INCHES of talcum powder on the floor where this person apparently "bathed" with the talcum powder, then carried/spread it throughout the apartment. This actually was kind of a "bad luck" apartment...after I got that person out and reno'ed the unit, my next tenant in there seemed to be racking up huge electrical usage. After not getting responses to schedule an inspection, I smelled smoke outside the door and went in to investigate. The entire apartment was a grow zone. I called the cops and they cleared it out. At least it was left in good condition! Then, that winter, the steam heat system froze, and we got a call from a neighbor about a giant icicle hanging off the back of the house. On investigation, I found a mass of ice the width of the kitchen wall, and about 18 inches thick at the second floor level where the water had fed it for quite some time. It reached all the way to the ground... at least that was clean ice!