It should be a tool used by experienced parties in specific scenarios.

Specifically STR build to rent. 

Closing costs typically range from 2 to 5 percent of the total loan amount, and they include fees for the appraisal, title insurance and origination and underwriting of the loan.”When it comes to closing costs, a trusted lender can guide you through specifics and answer any questions you may have.

Just to name a few: Borrower's Experience FICO Loan Amount Loan Type being sought: Perm (30 yr ams), Bridge (12-36mo I/O), Rehab (12-36mo I/O), Ground Up (12-60mo I/O) Property Type (1-4 unit, 5+ MF, Warehouse/industrial, Hospitality etc)If you have a specific deal in mind, then you can have a lender (or broker) look at it and give you a better idea.

Are there specific features traveling nurses value most in a rental?

Here in NY if I wrote a cash for keys agreement, it would have to be filed in specific legal places with certain documents and notarized. 

Last year January MN enacted the biggest # of changes all were added details and raised the bar of requirement for Landlords, including some specifically detailing how a listing must be detailed.

@Cristal Ochoa @Leiah DotlichI will preface this with the fact that I have a legal background, specifically with estate planning and asset protection.

Also, have you considered a specific investment strategy (e.g. rentals, fix & flips)?

All depends on what your goals are and what market fits your game-plan/criteria