@Zachary StanleyA person's charisma, confidence, and defining characteristic that sets them apart from the crowd are frequently linked to the idea of possessing "it" or the "it" factor.

Supposedly, the BEST negotiators share common characteristics and traits: -Active listeners!

And also do your own research of comps and provide any comparable sales which you think are more comparable to your house and detail those characteristics, also providing objective data and analyses showing that. 

I did an informal survey of multifamily apartment owners and asked them what characteristics of tenants are the least likely to get evicted.

Understanding the characteristics of the property and matching it to your ideal guest type is also critical for success.

To provide investors with high-quality leads for distressed properties.I'm reaching out to gather your invaluable insights for honing my service:Ideal Lead Characteristics: What embodies your perfect distressed property lead?

In some instances the premium rents for the larger units combined with the lower construction costs of the larger units performs better but its circumstantial based on the building characteristics and market.

As you know, some key characteristics of a quality property management company are effective processes, strategic decision-making, and excellent communication.

If REI ends up being your pursuit, I'd do something similar that @Cody L mentioned and that I mentioned in the NFL player thread but more SFH oriented. 60% towards 20-40% LTV properties that are undervalued(less than median price) in a growing city(by characteristics, trends, industries). 

While not as good as Spain or Portugal, Greece shares some similar characteristics like the low property prices and big tourism industry so it could still be a good market for short-term rentals.