Only superior design and amenities are winning.A few markets with strong cash-flow and lower saturation would be Bradenton FL, Clearwater/unincorporated Pinellas County and Hollywood FL.

One would think Orlando would be a good short-term market but I've been told my an agent that the STR market is saturated and difficult to operate in.

Or is all the building over saturating the rental market?

(they might think that anyways with 2)The Why:The issue with doing more than 1 or especially more than 2 in the beginning is you don't have enough time or money to get enough volume or market saturation to reach any statistical signficance.   

Or, does that mean too much saturation?

Lots of growth and also lots of saturation and supply these days. 

I would only rank 4-5 other US markets above Columbus in terms of opportunity and under-saturation with investors.

Flagstaff is a great location for a short term rental, it is however pretty saturated with STRs.

Generally speaking, the Mexican market is way less saturated than the US market but there are exceptions and a 3 BR+ property won't save you there.4.

There is plenty of other places to do a STR, too many matter of fact that's why in general STR inventory is saturated.