With a Google business listing, you’ll be able to receive reviews and scores from customers, which could work for or against you dependant to your business. Moreover, it gives potential customers all the information they need from opening hours to contact details, which are visualised on Google maps.
Having a Google+ page for your business won’t give you that much freedom, but it is definitely more sociable as you will be able to share promotions and other big news to your followership.
Okay, I’ll tell you why – Most of the people nowadays search for businesses or services online. Hence, it is vital to have a local business listing on the search result page, in order to attract potential customers.