I am searching for a place to retire to in 4 years

Not to rain on your parade, but you need to think long and hard about present day PR, possibly totally in the context of Mexico.  I lived and worked in PR in the 60s, and it is much the same today as it was then, with the exception of exponentially higher crime.  Living alone outside of the urban area is not an option.  Again, outside of SJ, there is no public transportation, making it a struggle to go anywhere to get anything done.  Here, Mexico is one up.  I was never at a loss for transport anywhere at anytime, and I've lived in, or know, places from Hermosillo, Son, to DF, to Matzatlan and Pto Vallarta to Acapulco.  Good luck.