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. 

Sorry if I occasionally miss a question.

No active problems, but is an old house with basement crickets, house centipedes and the occasional american cockroach  coming up the plumbing. 

Prior to this we did get the occasional person thinking it was too cold, but we only get that about three times a year now with 3 pool cabins.