If this is the cheapest place that is in a safe neighborhood, they may be trying to keep out the marginal renters that could potentially drag the place down. Or keep the place desirable for the good renters. Or else make the rent look cheap by tacking on extra fees that are included at other places.
If the balconies have iron railings that can be seen through, that might make sense. Balconies are the one thing other residents can see easily. If you have regular furniture out there, you must not mind it getting wet, so it probably isn't in good condition to start with. Think of an old, broken down couch. Or other things that might get moldy and be an eyesore.
They occasional drop off flyers with apartment rules on them. Window coverings must be white on the side facing outside. No items on balcony can be higher than the railing. However, I have an outright jungle on my balcony growing food, and hadn't seen flyers about it this year. I had a pile of junk on the balcony this winter though. I'm 3 floors up, so it can't be seen well from the bottom.
I've seen places that charged extra for bottom floors, and other places that charged more for top floors. I couldn't figure out the reasons in each case.
Income three times the rent - many personal finance books recommend this anyways. I know I've seen 2.5 times the rent.
Sticky shelf paper could definitely be an issue. If you clean the cabinets well, why do you need shelf paper? If you are concerned about glasses breaking and stuff like that, most of the shelf liners I see at the store don't glue on.
Pets - I've paid $200 non-refundable fees plus the pet rent. They may be trying to *strongly* discourage pets.
Renter's insurance - I've seen apartments that make you sign something that you have obtained rental insurance. I think the current place wants you to provide a copy of the policy, or use theirs. However, I didn't have problems at move-in.
Trash outside for a long time could be an eyesore or attract pests.
Employment in the same field could just be another means of screening out undesirables. My place gives a discount for government employees and military. Because they know they have more job stability.
There is also a low income housing unit just down the road, so they may be trying to send the lower income people somewhere else.
I looked at the site apartmentratings.com before renting, and it didn't seem that great. However, I liked the layout and the huge closets here, and their recent renovations inside the apartments look really nice. Light tan walls with white trim, the countertops are laminate with a faux granite pattern, and the cabinet doors have been updated to a more modern style.
I looked at apartmentratings.com 2 years ago before renting, and the reviews weren't that great. But the price and apartment design were attractive. Now when I look at that site, the reviews are much better.
They have a habit of announcing maintenance visits only one day ahead of time. And make them every couple months. I think they do this partially to confirm that a) there are no drug dealers/pot growers there, b) that the right number of people are living there, and c) that the non-pet apartments don't have pets. It's annoying, but they've never said anything about the huge mess, unlike my last place. Since I make six times the monthly rent and am billed by automatic deduction, I doubt they care as much.