I would recommend considering conventional financing until you reach Fannie Mae's limit of 10 properties, then consider either a portfolio loan, and start your race to 10 again, or look at DSCR at that time. 

But the answer for everyone may differ.Here are the personal attributes I see in those able to achieve a higher than market ROI, enough higher to be able to “scale”.1- Knowledge of real estate principles, real estate law and real estate finance2- Minimum 3 -5 years full time, or near full time experience directly related to real estate investing3- Ability to utilize technology for increased efficiency, capacity, and accuracy4- Excellent hired legal counsel and excellent hired marketing help5- Established method(s) of obtaining consistently high QUALITY deal flow6- Ability to manage and choose people who are NOT employees: Attorneys, Appraisers, Mortgage Brokers, Real Estate Brokers, Title Companies, Surveyors, Marketing Specialists, Accountants, Contractors, Consultants, Property Managers7- A VERIFIABLE track record of success8- Ability to identify, analyze, and negotiate a deal that can be “worked” for “enhanced” ROI9- Some type of competitive advantage; for example for me it’s my ability to analyze and identify mortgage loans that are actually less risky than all other lenders believe (on the investing in debt side), and on the real property side it’s my ability to analyze”pull the trigger” with LESS information than other investors need,  combined with the ability to pay cash, or raise significant capital almost instantly as well as being able to obtain loans at the lowest prime customer bank rate with no recourse or personal liability.  

Certainly more options because you are no longer limited by imaginary boundaries of traffic and time.

But if the OTA has a significant market share, there are limited options for the host.  

What I can share is that the risk-reward will not be worth it as a 'newbie' due to your limited capital and inability to actively manage your properties. 

it may be jurisdictional specific, but it would certainly limit the sources for providing credit reports.  

A pool can be a big liability, but can also be a bonus for the right tenant that is willing to pay extra for that amenity.

They bring higher tenant turnover, limited cash flow, and attract traditional tenants who aren’t your ideal long-term buyers.

You've listed the "big three", and those are all that are needed for most MTRs, especially if you have a limited number of doors in an area.

For rentals, consider holding properties in an LLC for liability protection.This post does not create a CPA-Client relationship.