Quote from @Todd Boone: If it is, what kind of investment? 

Long-Term Investment Perspective:You’re right in noting that the market can seem saturated now, but it’s important to take a longer-term view.

. :)We definitely want to invest in true vacation rentals as well but this will be a good learning process with not as much risk to start.  

The two are almost entirely different markets in terms of price points, returns, tenant quality, and overall investing strategy.

What is your biggest challenge in RE investing right now?

I own 12-doors there and help others invest there for a living.Of my 12-doors, 4 of them are comprised of two duplexes.

., Investing for "what if" is fraught with risk. 

Your initial terms will vary based on your investment experience, but generally, you want to plan on needing 20% of the purchase price if you're a newer investor and the lender will cover 100% of the rehab.

ask questions.also, you have to have money to invest. 

Here is my list of the most dangerous real estate related investments for the “non professional” investor lacking direct knowledge  and experience in these investments 1.