It was in AWFUL condition, but the bank gave us money to repair and update it. 

This price seems high to me, considering the work that needs to be done plus I have looked at other duplexes in the area that have sold in the last two years and they are selling at about the same price but are in move in ready condition. 

Nature and provider of the utilities (city water or well, city sewer or septic, other utility sources and whether or not they are direct billed to the tenant or not)Age of the parkUnderground infrastructure age and condition (have there been any repairs?)

Now that you have new tenants, make sure they fill out a statement of condition for the apartment/inventory list (essentially to document the status of the apartment before living in it).

Property was in good condition.

Property was in good condition.

I've been looking into the Direct Marketing method and my question is this: How can you properly analyze the propery/deal when you dont know the condition of the inside of the properties you're reaching out to?

The property has an old but in decent condition Single Wide Manufactured home (does need some updating) with land included (not a mobile home park).

These two specifically give you a real and unembellished condition of your investment property as well as the history of the property itself. 

Without seeing the property it's impossible to know the numbers for these items, but a typical property like this will cost between $5-10k/year in repairs/maintenance and capex alone in my experience, depending on the condition of the property and your intended hold period.