Just make sure to account for repairs, capex, maintenance and any management (if applicable) in your cashflow numbers.

I see no grounds maintenance.

After all that, make sure your rental rates are SOLID and you are accounting for maintenance, management, and vacancy in addition to your other fixed costs (taxes, insurance and mortgage).You can find more info on my link, on my youtube or facebook if you want any more help on this. 

I have seen another TK provider (one of the ones that seem most reputable) use a maintenance/cap ex based on their actual expenses but they have been in business less than 10 years. 

Extra charge for any maintenance calls 5-10% markup of the expense 3.

Basically between routine maintenance, major repair, and turnovers, It's costing me $1614/month. 

Better luck and better prospect with Marriott and Hilton brands, to get some good management companies - ultimately costing you 20% or more of the gross - when you add their extra-expenses of over staffing and unwanted maintenance and repairs bills, and, using their unused-resources to bill "your property" for services etc.

After you've been at this for a while, you develop a deep disdain for people who need to spend premiums for bigger and better houses for their personal living situation before they have build an unassailable financial position -- those people are marks in the real estate game, not players.Real estate can be a hell of a passive wealth maintenance strategy.

Also keep in mind that if you buy a rental you will want to keep some cash reserves on hand to handle maintenance/cap ex - of course that depends on the condition of the property you buy, or the level of rehab you do if you fix one up. 

Once you get up and running, it's not difficult, but it definitely requires more time and effort than long-term rentals.Finally, unless the STR returns are significantly higher than LTR or mid-term, I'd stick with the lower-maintenance mid-term/long-term renters.