The location is in a fantastic spot downtown in a town a few towns over from me and with ample off street parking, etc...There's a pretty big mortgage payment and there's not much left over month to month...or at least, not enough for me to be happy fielding calls, etc... at all hours and people expecting an immediate response. 

I handed the keys to my first property to my tenants this past Thursday, and it is a fantastic situation.The tenant asked about the possibility of installing a "Storm Door" on the property - which I of course do not have any issue with.My question here is in regards to who pays for the door and who installation costs. 

Bryan Hedges with Hedges Realty Executives is a fantastic realtor and resource.

If the seller can get it certified as a legal 3 unit before closing, fantastic.

I actually just read the chapter on "location" in Rental Property Investing, and Brandon did a fantastic job breaking down exactly how to do research! 

We lived in a trailer and I wore clothes that had holes in them.

That was a fantastic investment that appears to have paid off multiple times for you.As for the particular question you asked, I am familiar with both companies.  

Ditto to what @Stephen Keighery said, fantastic advice.

Takes maintenance out of my hands, and tenant doesn't have to share with other tenants and worry about leaving clothes in there all day. 

We used fantastic contractors to give us guidance and rehab our interior/exterior accordingly to make sure the property was up to par with the up-and-coming surroundings.