1. This location is perfect. You can walk to all of the essentials of historic Roma with ease. The only place we chose to take a taxi was the Coliseum and the Vatican. We could have walked to either though. You're in the heart of Roma's posh shopping district too.
2. The apartment is setup almost purely as an AirBnB rental. In other words, it was sterile clean all newly stocked with Ikea amenities and felt like a hotel suite minus the maid service. We didn't have to work around the owners personal belongings and toiletries like some AirBnBs.
3. This kitchen lacks an oven and normal counter space, but it does have a range with hood. All other necessities are accounted for. Therefore it is easily possible to prepare a limited family meal to offset the prices of local restaurants. There is a 24/7 grocer within a 3 minute walk (Careeforur Express Supermarket on Via Vittorio).
4. Allessia was very quick to respond to messages and had great restaurant recommendations for every meal of the day.
5. We chose to park at the Villa Borhese parking garage at 22 euro per day. It was a bit of a hike, especially going back "up" there on the way out of town. It may have been 20 minutes with a family plus bags. I did not find a better place to park a large van.