The location is right next to an incredibly popular ice cream and granita shop with a line out the door in the evenings. The line moves fast and the ice cream is fantastic.
This location is a quick walk to the commercial district. Moschino, Prada, Dolce Gabbana, Gucci - all within a 5 minute walk pretty much. It's also that close to the Spanish Steps.
Cost to the train station was about 12€, with a suitcase surcharge, and a driver who wasn't trying to scam. It was cheap. Lots of cabs pass by the apartment. Uber was trying to charge 30€. take your pick.
It was also a 20 minute walk to the vatican. I hope to never again do the vatican tour, but if you're interested then this is a very versatile location for you.