Depends what type of business it is.
Puerto de Mazarron is like a ghost town in the winter, so if your business is aimed at tourists then certainly take that into account. If however it's got year-round sales potential then the location is good because as 'Juanetta' pointed out a large supermarket is there and Lidl is just accross the street, so there will be some year-round business potential.
So it all depends on what your selling and who your target customers are, I'd guess.