The bus stop is 5 minutes walk. There are very friendly venders for grocery. There is a coap store where u can buy readymade food. Bus 32 takes u directly to Vatican-20min. To ottaviano metro station again in abt 20min. From there go to Spagna metro station for Spanish steps, pantheon , Trevi fountain . Far from the costly and crowded city center but very conveniently located. If u love dog, there is a joker of a dog Hamlet to entertain u!!