Your debt will affect your ability to borrow.If the townhome is part of a HOA, condo fees can take up a lot of money and they may have restrictions on rentals. 

When we were considering where to invest, and whether or not to self manage those investments, proximity by car or flights was a huge factor. 

- Management fee percentage and what that typically includes (my company seems to charge a cleaning fee separate from their management fee, which I hadn't realized)- Additional monthly expenses (my company charged $200+ for a fire extinguisher inspection?)

Quote from @Tom Server: Hey what are the rates are you seeing for investment mortgage rate for non owner occupied 750 credit score  Hey Tom, A few factors come into play here.

At the extreme we had one QTA that took 9 years and $45,000 in attorney fee and hadn't gone to court yet.David Krulac Bigger Pockets Podcast #82

Isn't VRBO an 8-9% fee and airbnb only 3% to the homeowner?   

Some markets have seasonality to factor into the indicators above.  

I've been in a few that required professional carpet cleaning upon move out - either show proof of the cleaning with receipt or they would charge you the fee for them to hire it out.

On going training on negotiation and market understanding .. in some companies they make you get your RE license so , is a plus you could maybe triple deep, acquisition fee, disposition fee and then list it for your investor... 

One rule helped here (I simplify a lot): you should always count how much money will be left in your pocket after all expenses (including mortgage payments, taxes, fees, utilities, as well as the reserve fund for the current repairs of the property).