All of the above is accurate. For another example, my current run:
0530 - On duty CPS
0630 - Depart CPS - SGF
~0745 Depart CPS - HRO
~0830 Depart HRO - ASG
0900 - 1600 Sit around, surf the net, borrow the crew car, post on flight info, etc etc.
1610 - Depart ASG - HRO
1645 - HRO - SGF
1726 - SGF - CPS
1900 - Off duty
You definitely load your own cargo, but a 210 only holds about 1000lbs max and you're rarely 100% full, so it's not what you'd call back-breaking.
Both the runs featured in the thread are pretty long, which is good for the pay. There are other options. If you want to log a decent amount of time but not be at work all day (and you're independently wealthy), there are some short ones, too. 615 out of HKS was my first run, and as I recall it was something like 5 hours, with maybe 3 of flying. Still paid the daily minimum of $75.
Paperwork as stated above is pretty minimal. You have to call in your times and weights at the end of the day, and of course you have to do the weight and balance.
I also concur on the maintenance. The planes are old and they've seen a lot of service, so stuff is going to break. That said, if you squawk something, it gets fixed. I've never been pressured to fly with anything broken, and never in weather that I judged to be dangerous. It's a balance, of course. You can't just sit on the ground when there's a cloud in the sky, but in the rare instance that I've delayed for weather (t-storms right over the field), I never heard a word about it from anyone.
Basically, the job is exactly as advertised, which is a refreshing change from other aviation jobs I've had. And you do learn *a lot*.