Should this be considered a show stopper, or is this, while undesirable, not uncommon (especially in a 100% investor owned complex)?

For example, they had the wrong year for one of the houses, listing it as built 10 years newer (1962 vs 1952)2nd, the appraiser has a limited percentage amount they can reduce or change a property's value, and he/she can only manipulate certain variables and cannot take into account other unusual or undesirable circumstances (ie - you showing them that the neighborhood has many registered sex offenders living there (the appraiser's words exactly). ) The appraisers need evidence; show them any costs, expenditures, etc., numerical or photographic evidence in your favor to bolster your protestation.

It was also suggested to me that you don't want to have too low of prices compared to the market because of potentially attracting undesirable tenants.

They sell homes in undesirable areas of Indianapolis.  

Lots of drugs and undesirable people.

In that case, it may take longer to rent your unit or you will have to accept undesirable tenants because all the good ones can go get a nicer property next door.Pretend you are a tenant seeking a place to live and compare your property to the others.   

There could not be a clearer link between a liberal Supreme Court justice's line of thinking and eugenics than if she said, "we need to legislate means to abort undesirable portions of the populace since legally we can't sterilize them anymore".

Or they want to keep "undesirable" renters out of town?  

Being close to that would be undesirable to me but it's definitely not what I would consider to be a "bad area".You should be careful with tax liens as there is a rather large amount of federal land in the county and it's not uncommon to have tracts of land that have no legal access. 

Perhaps popcorn texture is common/popular in your area, but in many areas, it's actually considered out-of-date and undesirable, and you may be adding some value by getting rid of it and repainting the ceiling.Just a thought...like I said, I don't know your area, so I could be way off base...