Hey Alex, From what I am seeing and hearing from the agents/investors that I work with, a lot of investors who own properties are starting to transition from LTR to MTR/STR model, and housing professionals/nurses + the occasional booking on Airbnb/VRBO.  

I have project management and re agent experience along with time so I keep coming back to flipping with an occasional brrr to build long term.

bondo glass" (also polyester resin, talc with fiberglass cloth strands) & similar is the "lowest" group of products I would even remotely consider for exterior/occasional water exposure.

The monthly fee of X% should cover most regular things (collecting rent, answering calls, dealing with the occasional repair request which might happen once or twice a year depending on the tenant). 

Occasionally I checked in 2000 there're few FS condo w/ 200k, now price is double in just 4 years.These are really the market where STR regulation is increasing the price. 

Spain is in very bad shape economically right now with extremely high youth employment and occasional riots.

Our guests are mostly visiting because of those two things, and generally for 1 to 3 nights, but we do get the occasional longer stay. 

I know Bigger Pockets touches on it occasionally.

In my case, our income from our jobs may very well be enough to take care of occasional large repairs and vacancies.

For properties under $50,000 where HUD offers a flat $1250 commission to each agent the percentages are skewed but the number is somewhere in the minus $2500 + 5 to 6% as the minimum acceptable although occasionally a computer glitch(I assume the software was not set up for a flat fee commission) the counter will come back at minus $2500.